it                377 gc/include/gc_alloc.h ???copy stuff from stl_alloc.h or remove it to a different file ???
it                303 gc/include/private/gcconfig.h      --> Not really supported, but at least we recognize it.
it                571 gc/mach_dep.c  	--> fix it
it                 21 gc/pthread_stop_world.c   --> please fix it