* ggc-page.c (alloc_page): If HAVE_MMAP_ANYWHERE and we're
	asked for one page, allocate GGC_QUIRE_SIZE of them and put
	the extras on the free list.
	(release_pages): Clean up.
	(ggc_set_mark): Don't adjust G.allocated here...
	(sweep_pages): ... do it here.

From-SVN: r35961