Controller class UpgradeWizard of install tool method performUpdate()
calls getDatabaseConnection() (old TYPO3_DB) and connects. This was
done in the past to receive the list of executed queries during
upgrade and is now implemented in the single upgrade classes directly.

If running postgres, the connect attempt of old database class tries
to connect to a mysql instance and runs into a timeout.

Remove this TYPO3_DB left over from the install tool to successfully
execute upgrade wizards on non-mysql platforms.

Change-Id: Ia87ae4bce1c4f4992527f0fa6fbddebdb6e3733c
Resolves: #80026
Releases: master
Reviewed-on: https://review.typo3.org/51862


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>

We don't want to still have fresh installations that
enable ext:dbal. The patch removes the ext:dbal specific
handling from the install tool steps.
With an active loaded ext:dbal, the install tool still
works fine and runs through the steps, only new
installations can no longer choose "i do not use mysql".

Change-Id: I4b694d377df41b8ce3bd6360c7f81c9e4cd28843
Resolves: #77622
Releases: master
Reviewed-on: https://review.typo3.org/49578


Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>

As decided during T3ACME we will use the short
array syntax in master. The 7.6 branch will also be done
to make backporting easier.

Resolves: #77692
Releases: master,7.6
Change-Id: I37e9484b1012fc9161148257a842054c24d162ba
Reviewed-on: https://review.typo3.org/49651


Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>

The Doctrine DBAL library is added as a composer dependency
as a foundation to replace the current DatabaseConnection class,
EXT:dbal and EXT:adodb.

Doctrine DBAL is encapsulated within a ConnectionPool class that
manages the connections to all defined database connections.

The main parts of the patch consist of the connection management,
convenience methods for simple SQL queries, a QueryBuilder to build
complex queries in a database platform independent way and a
QueryRestriction Builder that aims to replace deleteClause and
BEenableFields in the backend context as well as enableFields in
frontend context.

Documentation and an example implementation of using the API will
follow in separate patches.

Releases: master
Resolves: #75454
Change-Id: I47837d9e77331132807bbb7fb956c359031b4f16
Reviewed-on: https://review.typo3.org/47111


Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

This change removes usages of ObjectManager and general
dependency injection with injection methods across the
install tool (including AJAX actions). Where necessary,
constructor dependency injection has been implemented
with automatic dependency instantiation if not passed
as constructor argument.

Change-Id: I859f07789120f538a1d735f386ff3ba3163bd00e
Resolves: #73605
Releases: master
Reviewed-on: https://review.typo3.org/46883


Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

This change:

* Adds `typo3fluid/fluid` as dependency
* Converts system extension `fluid` to a so-called Fluid adapter
* Adds TYPO3-specific Fluid integrations as compatibility layer
* Turns Fluid's RenderingContext into a very flexible API
* Updates a few templates and core ViewHelpers for compatibility

On a more general level the change allows using a wide array of
new template syntaxes and integration features (see feature
documentation included with this commit in `core` extension).

The breaking changes are minimal; mostly caused by removal of
deprecated code from the `fluid` system extension (rather than
fundamental changes to how Fluid itself works). Custom templates
should work with little or no migration required.

Change-Id: Ib505cb66dabcc711868924d2fab3015ce549fbde
Releases: master
Resolves: #62940
Resolves: #69863
Resolves: #58752
Resolves: #48221
Resolves: #49903
Resolves: #54509
Resolves: #55343
Resolves: #55660
Resolves: #57446
Resolves: #70036
Resolves: #61144
Resolves: #60082
Resolves: #11287
Resolves: #70960
Resolves: #71552
Resolves: #67930
Resolves: #48656
Resolves: #71821
Resolves: #59540
Reviewed-on: https://review.typo3.org/42425


Tested-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Reviewed-by: Marc Neuhaus <apocalip@gmail.com>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Xavier Perseguers <xavier@typo3.org>
Tested-by: Xavier Perseguers <xavier@typo3.org>
Reviewed-by: Alexander Opitz <opitz.alexander@googlemail.com>
Tested-by: Alexander Opitz <opitz.alexander@googlemail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

Install tool has a fallback layer to a php based template
in case fluid does not work due to broken reflection for
@inject annotations. Since @inject isn't used anymore in
install tool this layer can be dropped now.

Change-Id: Iedf0e9ea75fa105f649324c993963fb29e666607
Resolves: #72724
Related: #55352
Releases: master
Reviewed-on: https://review.typo3.org/45868


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>

In our efforts to achieve a better interoperability
with other PHP projects, the PHP code base of the
TYPO3 Core switches to the PHP coding guideline
standard PSR-2.

See http://www.php-fig.org/psr/psr-2/ for more
information.

Resolves: #70515
Releases: master
Change-Id: I734c0d838af157003decfeb5fc0a11dddcb87bf5
Reviewed-on: http://review.typo3.org/43918


Reviewed-by: TYPO3 Release Team <typo3cms@typo3.org>
Tested-by: TYPO3 Release Team <typo3cms@typo3.org>

Remove the possibility for extensions to provide
error and exception handling configuration in
ext_localconf.php of an extension. This only worked
anyway only for errors or exceptions at a later point
in the bootstrap. We now by definition make it only possible
in LocalConfiguration.php (or AdditionalConfiguration.php).

In addition make the configuration more reliable and understandable:

* Register error handler even if exception handling is not configured.
* Remove option 2 for displayErrors option
* Configure everything only once and early in the bootstrap.

Releases: master
Resolves: #68131
Change-Id: I204f17510fcb10fa8601162687793910fbcf4464
Reviewed-on: http://review.typo3.org/31844


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

Use composer class loader instead of the TYPO3 class loader
when TYPO3 is not installed via composer, thus building the same
class information logic during runtime (and caching it away) as
composer does with its "dump-autoload" command.

Releases: master
Resolves: #67212
Change-Id: Id032411a690d67ca690a724748c3c796d2bb5f6e
Reviewed-on: http://review.typo3.org/39827


Reviewed-by: Thomas Maroschik <tmaroschik@dfau.de>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Tested-by: Benjamin Mack <benni@typo3.org>

Install Tool bootstrap initializes the cache system and sets
all caches to NullBackend for increased stability of the tool.
Install Tool submodules however, that later call a bootstrap method
to additionally load ext_tables and friends for some scenarios,
indirectly call a method to set caches to the default values
without NullBackend again. As result, Fluid views are sometimes
cached again.
The patch supresses this by opening further detail methods of
the Bootstrap and calls them directly without pushing a
cache configuration again.

Resolves: #66809
Releases: master
Change-Id: I64acf470eba939eb7ba246aedb2bbb0fdf83384f
Reviewed-on: http://review.typo3.org/39283


Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>

The extension compatibility misuses the install tool message
system for its tests and hands over on-the-fly arrays instead
of proper message objects.
The patch moves the message creation to the controller and
hands them over to view instead.

Resolves: #66805
Releases: master
Change-Id: Icea9955e7e1206327f859abf4ec3bcada50a65e6
Reviewed-on: http://review.typo3.org/39279


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>

Most of TYPO3's PHP files have an empty line before a class' closing curly
brace. This commit adds this empty line (if it is missing) before a class'
closing curly brace.

This is not part of the TYPO3 CMS CGL but increases consistency in this
area.

This regular expression was used to add the empty lines:

Search:
(}\n)(})

Replace:
$1\n$2

Resolves: #63942
Release: master
Change-Id: Icd6547322ac8b7310956d347fd73c90bde2bbfa7
Reviewed-on: http://review.typo3.org/35527


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

This regular expression was used to replace PHPDoc style comments
with ordinary comments:

Search:
/\*\*(\n \* This file is part of the TYPO3 CMS project.)

Replace with:
/*$1

Resolves: #63328
Releases: master
Change-Id: Ic8f11dbfefee94a19657c8fe8426c81d1cb435d8
Reviewed-on: http://review.typo3.org/35103


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Tested-by: Benjamin Mack <benni@typo3.org>

Since PHP 5.5 is a requirement, calls with the objectManager
should use the ::class construct instead of a string argument.

Resolves: #63112
Releases: master
Change-Id: Iedbb896607adddce2b23ab67f990fa2296c0d1bb
Reviewed-on: http://review.typo3.org/34414


Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

* Use bool in @return
* Use int in @return
* Use bool in @param
* Use int in @param
* Remove extra tabs and spaces in @param

Resolves: #62506
Releases: master
Change-Id: I673888aa08855a1364150d0060d0f205fc1f83a2
Reviewed-on: http://review.typo3.org/33577


Reviewed-by: Stefan Froemken <froemken@gmail.com>
Tested-by: Stefan Froemken <froemken@gmail.com>
Reviewed-by: Frank Nägler <typo3@naegler.net>
Tested-by: Frank Nägler <typo3@naegler.net>

This patch replaces the copyright/license header in PHP files with a
new, simplified one. The new header does not show the year figure, nor
an author name, and refers to the LICENSE.txt file for the full
copyright information. License is: GPL2 or any later version.

This is a multi-part commit due to the huge number of changed files.
See issue #59778 for further details.

Resolves: #59778
Releases: 6.3, 6.2
Change-Id: I155df27e66ec103a4f83356adef7dc441585b54a
Reviewed-on: https://review.typo3.org/31023
Reviewed-by: Krzysztof Adamczyk
Tested-by: Krzysztof Adamczyk
Reviewed-by: Markus Klein
Tested-by: Markus Klein

Resolves: #57166
Releases: 6.2
Change-Id: I72aa55cff3322bbe46d271758fd04f3aba860ae7
Reviewed-on: https://review.typo3.org/28619
Reviewed-by: Ernesto Baschny
Tested-by: Ernesto Baschny
Reviewed-by: Philipp Gampe
Tested-by: Philipp Gampe
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn

For a first installer the directory structure is empty and the
first step will try to create it. We do not need to show these
as errors to the user, only if the root directory cannot be
written.

To achieve this we raise "Warnings" instead (which are
not shown in first step). To keep the Folder Structure menu
item on the left menu in the Install Tool showing a red badge
for non existing directories, we change this to also include
Warnings.

Resolves: #57152
Releases: 6.2
Change-Id: Idd628ecdf946f9befdb7fefd7a9bb7bccc175c2b
Reviewed-on: https://review.typo3.org/28605
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Wouter Wolters
Reviewed-by: Philipp Gampe
Tested-by: Philipp Gampe

Resolves: #57119
Releases: 6.2
Change-Id: I9be8b51fd695e2470e22fe084eeec507fd78f6f2
Reviewed-on: https://review.typo3.org/28578
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters

AbstractCoreUpdate redefines the $view member to be
a JsonView, but does not re-implement the parent methods
that rely on $view being an AbstractView.

Fix this by re-implementing the initializeHandle() method.
This method can be merged with the former initializeCoreUpdate(),
which wasn't called at all in most actions.

Resolves: #56865
Releases: 6.2
Change-Id: I85260a0e57e915ac941569cfbdde1f96cdaec5e6
Reviewed-on: https://review.typo3.org/28393
Reviewed-by: Philipp Gampe
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Markus Klein
Tested-by: Markus Klein

* Adjust default permissions back to "world readable" (775/664)
* Do not attempt to fix permissions on an existing folder structure
* Streamline the separation of Notices, Warnings and Errors
* Cosmetical optimizations in the "Folder Structure" item
* Also report if the default permissions are too insecure (i.e.
  world writeable / readable).

Note that the new defaults (775/664) are set to make the system work
by default on almost most scenarios, but the recommended secure setup
is still 770/660. This is on purpose to make the administrator aware
of it but will require manual intervention (i.e. "thinking") if this
setup will work or not (we cannot detect that automatically).

Resolves: #52668
Releases: 6.2
Change-Id: I77c72617fa58fd808ebc5fd818e94b48c2644102
Reviewed-on: https://review.typo3.org/25416
Reviewed-by: Christian Kuhn
Reviewed-by: Wouter Wolters
Reviewed-by: Stefan Neufeind
Reviewed-by: Philipp Gampe
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Ernesto Baschny
Tested-by: Ernesto Baschny

The install tool forgets to initialize the database connection.

Change-Id: Ib7355e4f931c7152a6d13df99ed550c1b61eacf9
Fixes: #56763
Releases: 6.2
Reviewed-on: https://review.typo3.org/28254
Reviewed-by: Andreas Fernandez
Tested-by: Andreas Fernandez
Reviewed-by: Markus Klein
Tested-by: Markus Klein

The installer does not work, if doc comment reflection
is broken, so we need to make the first install step
more robust by using inject methods and introducing
a failsafe view which does simple php templating
in case critical errors (like doc comments disabled)
occur.

Resolves: #55352
Releases: 6.2
Change-Id: I424d6a290b65ae023ec19a745477cfaecdef72c7
Reviewed-on: https://review.typo3.org/27067
Tested-by: Alexander Opitz
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn

Refine the class and interface structure of
Install Tool actions.

Resolves: #52736
Releases: 6.2
Change-Id: Id1b0107670859e140169767233ba9944822e0d8d
Reviewed-on: https://review.typo3.org/24665
Reviewed-by: Alexander Opitz
Tested-by: Alexander Opitz
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn

In the installer fatals can happen during updates of
very outdated extensions. Many updates can lead to a
redirect to the extension check where the user gets
displayed a message that a fatal has been detected.
But the detected fatal error itself is not displayed.

This patch passes the error as url parameter to the
extension check and displays it there.

Fixes: #54943
Releases: 6.2
Change-Id: I111df5d5411015b21c4b2b5e9be3b83b311c8bc5
Reviewed-on: https://review.typo3.org/26781
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel
Reviewed-by: Thomas Maroschik
Reviewed-by: Wouter Wolters
Reviewed-by: Stefan Neufeind
Reviewed-by: Markus Klein
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Tested-by: Wouter Wolters
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn

The patch provides the code infrastructure to test for possible
core updates using information from get.typo3.org and implements
a "one-click" update within "important actions".

The update itself is implemented as a list of ajax calls performed
after each other to have minimal impact and side effects to current
core code.

The service classes "CoreVersionService" and "CoreUpdateService"
contain the main business logic and may be used in a reports module
or scheduler task later on.

Change-Id: I5947252ca805b237b513fdafcf2696e9da586fc0
Resolves: #52547
Releases: 6.2
Reviewed-on: https://review.typo3.org/24396
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel

Change-Id: Iaa92566c53301e49396fc9fb26b0b339c48d567b
Resolves: #52360
Releases: 6.2
Reviewed-on: https://review.typo3.org/24212
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Ernesto Baschny
Tested-by: Ernesto Baschny
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring

Similar to the environment status the number of folder structure
errors are now shown in the left menu.

Change-Id: I665c32e8a3c4389941437a2bb6caeb32b862b673
Resolves: #52368
Releases: 6.2
Reviewed-on: https://review.typo3.org/24136
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Markus Klein
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn

* Streamlines install tool main template.
* Adds a ContextService and use that in the templates.
  No more huge if/then/else constructs to differentiate
  standalone and backend modes.
* Fixes the left menu (and TYPO3 logo), letting the
  rest scroll up and down.
* In backend mode the menu and content starts right on top
  (no further headers to make scrolling look good)

Releases: 6.2
Resolves: #50910
Change-Id: Ie2ec277026a82332b533af51a37e7f308dd24e8c
Reviewed-on: https://review.typo3.org/23798
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Ernesto Baschny
Tested-by: Ernesto Baschny

In the installation wizard (123 steps) the admin user is created with a
md5 hashed password. For security reason this should be changed to a
salted password. As this function is used in #31407 as well it was
refactored to the AbstractAction class.

Resolves: #50612
Releases: 6.2
Change-Id: Ide966eb1c1e05d2190f0d22446bc2b3e92643451
Reviewed-on: https://review.typo3.org/22738
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Stefan Neufeind
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters

With displaying the count of failed error checks in the navigation menu
(like the count of unread messages in an email inbox) a user will more
likely enter the "System environment" section of the install tool and
take care about the found errors and warnings.

Change-Id: I3d9b628b428da13992c3dc1e7e5ab6beaeda5ce1
Resolves: #51410
Releases: 6.2
Reviewed-on: https://review.typo3.org/23380
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters

Purpose of the initialize() method in the AbstractAction class is the
initialization of a handle. It is not intended to be used for generally
initializing classes derived from AbstractAction.

By refactoring the method name, the method's purpose will be indicated
more clearer.

Change-Id: I1603090e4dfccb5b57da4fa9c3792ec73647c524
Resolves: #51396
Releases: 6.2
Reviewed-on: https://review.typo3.org/23364
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn

With the switch to mysqli in 6.1, the connection to mysql server via
socket broke.

With mysqli, the definition is now:
* If hostname is "localhost", a socket is used and the socket file
can be given optionally if it is different from the default.
* If hostname is not "localhost" but an IP address, a port can be
given that may be different from the default mysql 3306.

The patch now reflects this in the database connect step and adds a
parameter for the optional socket location. The patch will be adapted
for 6.1 to include only the additional optional socket parameter.

Resolves: #48117
Related: #49162
Releases: 6.2, 6.1
Change-Id: I968a72dbaf90b3f319c03e697137630534d325c1
Reviewed-on: https://review.typo3.org/20933
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Markus Klein
Tested-by: Markus Klein

Main features:
* The god class "Installer" is gone and split into two major parts.
A step controller handling major upgrade and install tasks, and a
tool controller handling the known install tool actions.

* The step controller is designed to be always called prior to the
tool controller, if a step needs execution, it comes up, otherwise
the tool controller will be executed.

* The entry point typo3/install/index.php is gone and substituted
by typo3/sysext/install/Start/Install.php. The file contains a
lengthy comment to document the main request flow and used GET/POST
parameters.

* Most parts of the install tool do not bootstrap the whole system
anymore, in general only the base bootstrap, dbal (if loaded),
extbase and fluid ext_localconf.php are loaded. This makes sure
the install tool can not fatal if some extensions ext_localconf
is broken. The whole install tool runs without any caching, so a fatal
in some cache file can not kill the install tool execution.

* Installing TYPO3 CMS on a dbal enabled system is now handled in
the step installer directly to make the according code easier to
understand.

* Rendering is done with a simplified fluid standalone view.

* All install tool forms are CSRF protected.

* A new and fully unit tested class structure is introduced, designed
to take care of the basic file and folder structure of the instance.
It is used during installation to create the needed structure and
can be called in the install tool to compare and fix the current
instance structure with the expected structure. In effect, the
"dummy" package is obsolete. An instance can be created by just
linking index.php, typo3_src/ and typo3/ within the document root,
the installer takes care of creating everything else.

* The installation procedure is released from the package handling.
Packages will be handled by the extension manager after initial
installation with another patch.

Loose ends:
* The whole package handling needs to be implemented in the
extension manager.

* Not all upgrade wizards work, this code area needs some love.

* A 'core' auto updater could be implemented now. A GSoC project
is currently running to realize this.

* The SQL schema migration API is a mess and should be refactored.
For now, another helper class is introduced to encapsulate some
of the nasty details.

* An auto configuration and configuration suggestion system is
planned and needs to be done. It should suggest best configuration
options in the install tool, and should auto configure the system
during installation in the last install step.

* If the backend or frontend fatals due to some extension that
triggers a fatal in ext_localconf or ext_tables (for example
due to a require() of a no longer existing file), a small helper
action in the install tool could find those extensions and suggest
to unload them.

Change-Id: Ice3248caa903449ad6a83ea4f234c7bd125bdb66
Resolves: #49162
Releases: 6.2
Reviewed-on: https://review.typo3.org/21468
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Tested-by: Alexander Opitz
Reviewed-by: Stefan Froemken
Tested-by: Stefan Froemken
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn