[Distutils] Python Eggs: Major documentation update

[Phillip J. Eby]

I've just completed a major update to the Python Eggs documentation at:

    http://peak.telecommunity.com/DevCenter/PythonEggs

There is an all-new API reference that gives detailed coverage of the most 
important classes and functions provided by the "pkg_resources" runtime 
module, as well as an expanded "Developing with Eggs" section that explains 
more about namespace packages, developing from source checkouts, and how to 
update modules to find their data files using the resource API instead of 
by __file__ manipulation that won't work from inside zip files.

Please let me know if you have any questions or find any problems.  Thanks!