M PyShell.py
M idlever.py
M setup.py

1. Update MANIFEST.in to include all non-pure Python files
2. PyShell and idlever reflect Rev 0.9a0
3. setup.py modified to install IDLE as a collection of modules with
   a .pth file living at the idlelib level in site-packages.  This was
   done to make it easier to run from the source directory prior to
   installing IDLE.  This approach may change back to the package
   technique depending on what happens with the Mac installation
   development.