#i124001# remove readonly flag from Anchor property
#i114728# fix linking of quicktime framework on SDK!=10.7
#i114728# remove the unused gb_Library_add_ldflags helper

when the alternative is between
- adding an add_ldflags helper and providing extensive docs about it and all other related gbuild macros
- just using the already existing set_ldflags macro
then that choice is easy...