* malloc/malloc.c (public_mTRIm): Iterate over all arenas and call

* malloc/malloc.c (public_mTRIm): Iterate over all arenas and call

	mTRIm for all of them.
	(mTRIm): Additionally iterate over all free blocks and use madvise
	to free memory for all those blocks which contain at least one
	memory page.

	* malloc/malloc.c (do_check_malloc_state): Minimal cleanups.