Update to v1.3.0.1
Upgrade to Pepper 29 and v1.4.0.0
Overhaul build system in a very naive manner

Added 2 new Makefiles: one for x86_32 and one for x86_64. They're the
same except for 32- vs. 64-bit designations. The overhauled main
Makefile simply invokes each of these 2 files in turn.
Update README.md to reflect Pepper 29