[FEATURE] t3lib_DB: Turn off pconnect by default

By default, TYPO3 uses *_pconnect() to connect to the database. This
is however only required in case connecting to the DB server is slow. In
other cases there is no advantage in turning this on, but there may be
disadvantages if the configuration of database and web server are not
aligned.
See also http://www.php.net/manual/en/features.persistent-connections.php

This commit was made based on a discussion on typo3-dev, see message
<mailman.12316.1298886389.648.typo3-dev@lists.typo3.org> and following.

Change-Id: Ibdc5f5c6045206039cbb23be47e1d2e648a94da5
Reviewed-on: http://review.typo3.org/1137


Tested-by: Mr. Jenkins <blueduck@gmx.net>
Reviewed-by: Xavier Perseguers <typo3@perseguers.ch>
Tested-by: Xavier Perseguers <typo3@perseguers.ch>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Andreas Wolf <andreas.wolf@ikt-werk.de>

t3lib/config_default.php

@@ -88,7 +88,7 @@ $TYPO3_CONF_VARS = array(
 		'binSetup' => '', 						// String (textarea): List of programs (separated by newline or comma). By default programs will be searched in default paths and the special paths defined by 'binPath'. When PHP has openbasedir enabled the programs can not be found and have to be configured here. Example: <code>perl=/usr/bin/perl,unzip=/usr/local/bin/unzip</code>
 		't3lib_cs_convMethod' => '',			// String (values: "iconv", "recode", "mbstring", default is homemade PHP-code). Defines which of these PHP-features to use for various charset conversion functions in t3lib_cs. Will speed up charset conversion radically.
 		't3lib_cs_utils' => '',					// String (values: "iconv", "mbstring", default is homemade PHP-code). Defines which of these PHP-features to use for various charset processing functions in t3lib_cs. Will speed up charset functions radically.
-		'no_pconnect' => FALSE,					// Boolean: If true, "connect" is used instead of "pconnect" when connecting to the database!
+		'no_pconnect' => TRUE,					// Boolean: If true, "connect" is used instead of "pconnect" when connecting to the database!
 		'multiplyDBfieldSize' => 1,				// Double: 1-5: Amount used to multiply the DB field size when the install tool is evaluating the database size (eg. "2.5"). This is only useful e.g. if your database is ISO-8859-1 encoded but you want to use UTF-8 for your site. For Western European sites using UTF-8 the need should not be for more than twice the normal single-byte size (2) and for Chinese / Asian languages 3 should suffice. NOTICE: It is recommended to change the native database charset instead! (see <a href="http://wiki.typo3.org/index.php/UTF-8_support" target="_blank">TYPO3 wiki: UTF-8 support</a> for more information). NOTICE: This option is deprecated since TYPO3 4.5, and will not be used anymore in 4.7+. Please use proper tools to set your installation to native UTF-8.
 		'setDBinit' => '-1',						// String (textarea): Commands to send to database right after connecting, separated by newline. Ignored by the DBAL extension except for the 'native' type!
 		'dbClientCompress' => FALSE,			// Boolean: if true, data exchange between TYPO3 and database server will be compressed. This may improve performance if (1) database serever is on the different server and (2) network connection speed to database server is 100mbps or less. CPU usage will be higher if this option is used but database operations will be executed faster due to much less (up to 3 times) database network traffic. This option has no effect if MySQL server is localhost.