2009-12-07 Ivan Maidanski <ivmai@mail.ru>

2009-12-07  Ivan Maidanski <ivmai@mail.ru>

	* doc/README.macros (GC_READ_ENV_FILE): Document (new macro).
	* include/private/gc_priv.h (GETENV): Recognize GC_READ_ENV_FILE;
	declare and use GC_envfile_getenv().
	* misc.c (GC_envfile_content, GC_envfile_length): New static
	variable (only if GC_READ_ENV_FILE).
	* misc.c (GC_ENVFILE_MAXLEN): New macro (used in GC_envfile_init).
	* misc.c (GC_envfile_init, GC_envfile_getenv): New function (only
	if GC_READ_ENV_FILE).
	* misc.c (GC_init): Call GC_envfile_init() (before using GETENV)
	if GC_READ_ENV_FILE.
	* misc.c (GC_init): Move GC_setpagesize() and GC_init_win32()
	calls to be just before GC_envfile_init() one (since the latter
	uses GET_MEM).
	* misc.c (GC_abort): use ExitProcess() (instead of DebugBreak) for
	WinCE if NO_DEBUGGING; add a comment for DebugBreak() (for WinCE).
	* mark_rts.c (GC_add_roots_inner): Remove redundant trailing '\n'
	from the ABORT message.
	* misc.c (GC_init): Ditto.
	* os_dep.c (GC_get_main_stack_base, GC_register_data_segments):
	Ditto.
	* pthread_stop_world.c (GC_push_all_stacks): Ditto.
	* pthread_support.c (GC_init_real_syms, start_mark_threads):
	Ditto.