Remove duplicate disassembly printing from scanners and
put common code in caller(s). Show source-code line numbers in disassembly output
and fix alignment of byte offsets.
disas.py: workaround Python 2/3 different layouts before we get to
bytecodes in a code object.
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.