- explicitly list all lib-dynload files, rather than dynamically gathering
the payload into a temporary text file, so that we can be sure what we
are shipping
- introduce a macros.pybytecompile source file, to help with packaging
python3 modules (Source3; written by Toshio)
- rename "2to3-3" to "python3-2to3" to better reflect python 3 module
packaging plans
