2009-10-16 Ivan Maidanski <ivmai@mail.ru>

2009-10-16  Ivan Maidanski <ivmai@mail.ru>

	* alloc.c (GC_finish_collection): Replace getenv() with GETENV().
	* dyn_load.c (GC_init_dyld): Ditto.
	* os_dep.c (GC_print_callers): Ditto.
	* dyn_load.c (GC_dyld_name_for_hdr): Cast _dyld_get_image_name()
	result (since it's always of "struct mach_header" type).
	* dyn_load.c (GC_init_dyld): Cast GC_dyld_image_add and
	GC_dyld_image_remove (to always have the first argument of
	"struct mach_header" pointer type).