* Makefile.in (memattr_h, memattr.o): Update.

	* Makefile.in (memattr_h, memattr.o): Update.
	* memattr.h: Include "vec.h".
	(struct mem_region): Remove linked list pointer.
	(mem_region_s): New typedef and corresponding vector.
	* memattr.c: Include "vec.h".
	(mem_region_chain): Delete.
	(mem_region_list): New vector pointer.
	(mem_region_lessthan): New function.
	(create_mem_region): Remove unused return value.  Use vector
	operations.  Remove linear search.
	(delete_mem_region): Delete.
	(lookup_mem_region): Use vector operations.  Add a FIXME.
	(mem_info_command): Update to work with vectors.
	(mem_enable, mem_enable_command, mem_disable, mem_disable_command)
	(mem_free, mem_delete): Likewise.