#i123951# prepare ATSUI code parts for its new CoreText cousin
#i123951# add an OSX CoreText based text system
#i123963# remove type ambiguity in toolkit's VCLXDevice
#i123948# fix struct/class mismatch of PrefetchPropertiesFunc's forward declaration
#i123964# make symbol visibility consistent in sc module
#i123964# fix symbol visibility mismatch in dbaccess module