#6 setup.py fixes/enhancements

[Mike C. Fletcher]

Attached find a functional version of setup.py that can
be used to create full distutils installers for PyUI
(i.e. with setup.py sdist --formats=gztar,zip
bdist_wininst) that keep the .png files with the code
on install, and automatically update to include new
sub-packages. There is a new MANIFEST.in file attached
as well which takes care of the sdist stuff (though at
the moment it's quite conservative in what extra files
it's including).

I've roughed in the metadata required for PyPI
registration as well.

[Mike C. Fletcher]

Setup script with proper handling of resources

[Mike C. Fletcher]

Better manifest which includes test and docs directories in source distributions