[BUGFIX] Exclude E_STRICT from errors with PHP 5.4

The main entry points have been refactored, but some places have been
forgotten leading to E_STRICT errors flooding the log.

Refactor all places to use the same code:
error_reporting(E_ALL & ~(E_STRICT | E_NOTICE | E_DEPRECATED));

Change-Id: I5ba40bcefd236d77b21cdb545685bcae40e60f1f
Related: #35154
Fixes: #38691
Releases: 6.0
Reviewed-on: http://review.typo3.org/12689
Reviewed-by: Marcus Schwemer
Tested-by: Marcus Schwemer
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel