fixup MANIFEST.in
pythonlib.py: store expected python version and don't compile if it
mismatches. Work files now go in temp directory. Start masrhal load in
Python for Python3.
Fix inconsistencies in uncompyle2 script, rename to scripts/uncompyle2 & add to
setup.py (these are all changes from wibiti). Also, change script headers so
they work on Windows too. Remove build folder from repo & add .gitignore so it
doesn't inadvertently get added again.