[BUGFIX] Install Tool: Make ISO language SQL queries DBAL compatible

Use database independent quoting for field values and compare the
numeric static_lang_isocode field with an integer instead of an empty
string.

Resolves: #67707
Related: #61542
Releases: master
Change-Id: I7c7e1352e92598a57524a05c9e048391df63df13
Reviewed-on: http://review.typo3.org/40575


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