2009-09-23 Ivan Maidanski <ivmai@mail.ru>

2009-09-23  Ivan Maidanski <ivmai@mail.ru>
	(ivmai150.diff)

	* Makefile.direct (MUNMAP_THRESHOLD, GC_FORCE_UNMAP_ON_GCOLLECT):
	Add the comment for.
	* alloc.c (GC_unmap_threshold, GC_force_unmap_on_gcollect):
	Declare external variable (only if USE_MUNMAP).
	* alloc.c (GC_try_to_collect): Temporarily set GC_unmap_threshold
	value to 1 if GC_force_unmap_on_gcollect and restore it before
	unlocking (only if USE_MUNMAP).
	* doc/README.environment (GC_FORCE_UNMAP_ON_GCOLLECT): Add
	information for.
	* include/gc.h (GC_set_force_unmap_on_gcollect,
	GC_get_force_unmap_on_gcollect): New public function prototype.
	* include/gc.h (GC_FORCE_UNMAP_ON_GCOLLECT): New macro is
	recognized.
	* misc.c (GC_FORCE_UNMAP_ON_GCOLLECT): Ditto.
	* include/gc.h (GC_INIT_CONF_FORCE_UNMAP_ON_GCOLLECT): New
	internal macro (used by GC_INIT only).
	* misc.c (GC_force_unmap_on_gcollect): New global variable.
	* misc.c (GC_init): Recognize new "GC_FORCE_UNMAP_ON_GCOLLECT"
	environment variable (and set GC_force_unmap_on_gcollect).
	* misc.c (GC_set_force_unmap_on_gcollect,
	GC_get_force_unmap_on_gcollect): New public function.
	* tests/test.c (window_proc): Call GC_set_force_unmap_on_gcollect
	to force the mode on if WM_HIBERNATE; restore the mode after
	GC_gcollect().