[FEATURE] Allow special unique_field in MOC_DB insert or update method
[TASK] Remove t3lib_div::makeInstanceClassname

Removed the method t3lib_div::makeInstanceClassname since it is deprecated in TYPO3 vers. 4.7
The classname is now just given - t3lib_div::makeInstance should handle xclass'ing etc.

Refs: #9271
[!!!][TASK] Update code base to TYPO3 6.2 compatibility