Create Makefile.bundled, which is to be included by clients of
VST that want the flexibility to use either an opam/Platform
install of VST or a local build.
Refactor progs/VSUpile/Makefile to use ethis.
Copy the Appel&Naumann malloc/free verification (from Beringer's VSU
version of the original at github.com/PrincetonUniversity/DeepSpecDb/memmgr)
into progs/memmgr, and make it build from the VST/Makefile as the target
"memmgr". Or it can build indendently (see item 1 above).