BuildFormPlainTest.php: fixed issue with double declared class FakeTSFE.
ReportTest.php: initially created.

Sip.php: disabled session_start in phpUnit environment.
Store.php, AbstractDatabaseTest.php: removes phpUnit flag in constructor - class is static and the flag will be set in Store::getInstance().
BodyTextParser.php, QuickFormQueryTest.php, StoreTest.php: removed token debugShowStack, TYPO#_DEBUG_LOAD, TYPO3_DEBUG_SAVE - no longer used.
Constants.php: removed token TYPO3_DEBUG_LOAD, TYPO3_DEBUG_SAVE - no longer used.

Store, Constants, Database, QuickformQuery, AbstratDatabase, StoreTest: renamed several config.ini variables to use the '_'.

Database: Moved implementation from PDO to mysqli. Reason: mysqli_num needed for `report`, but PDO can't fetch column names than.