* Makefile.in (mm.o): New target that combines all the functions

	* Makefile.in (mm.o): New target that combines all the functions
	into a single object module.  This avoids client programs picking
 	up part of the allocation routines from mmalloc and part from libc,
 	which can lead to undefined behavior.
	(CFILES): Add mm.c
	(TARGETOBJS): Define to be either the individual objects or the
	single combined object.
	(TARGETLIB): Create the archive using TARGETOBJS.
	* mm.c: New file that simply #includes the other source C files.