Moved InformationSchema and SystemSchema classes to the proper namespace
Function create statement form changed. DDB-20 Fixed
Cosmetics changes to system (system table creation and init moved to SystemSchema class); removed DirectAccess API (will restore it in a later version, when the whole system design will be more consistent)
Cleanup in logics of database creation: system procedures moved to SystemSchema; ensure procedure exists before creating
Better references for INFORMATION_SCHEMA