sqldb: enabled TSQLDBLibraryLoader, TPQEventMonitor, TFBEventMonitor and TFBAdmin for FPC 2.6.3 too in order to allow to test them before FPC 2.6.4 is released (FPC 2.6.3 built in February is OK)

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43194 4005530d-fff6-0310-9dd1-cebe43e6787f