Log message:
Improve EGG_NAME default to work for packages with '-' in their name.
Remove now unnecessary overrides in various packages.

Fix various problems while here, including marking packages as not ready
for python-3.x.

Log message:
Import py27-modargs-1.7 as wip/py-modargs.

modargs is a simple command line argument parsing library that infers
arguments from functions in a module