2011-01-05 Ivan Maidanski <ivmai@mail.ru>

2011-01-05  Ivan Maidanski  <ivmai@mail.ru>

	* misc.c (GC_write): Replace multiple "ifdef/endif" with "elif"
	(for ECOS and NOSYS).
	* os_dep.c (GC_get_main_stack_base): Ditto.
	* os_dep.c (GC_get_main_stack_base): Check
	USE_GET_STACKBASE_FOR_MAIN macro before checking STACKBOTTOM one;
	remove "dummy" variable (use result one instead); reformat the
	code.
	* doc/README.macros (SN_TARGET_PS3): Document.
	* extra/threadlibs.c (main): Don't output "-lpthread" (and "-ldl")
	for Android.
	* include/private/pthread_support.h: Fix comment for "endif".