Disable warning of LegacyVersion in parsed_version. This functionality should be called explicitly at whatever times are appropriate for the warning. Fixes #307.

Update EGG_NAME regular expression matcher to allow names to include dashes. Fixes failing test and fixes #307.

avoids unorderable None, str when sorting dists on Python 3

Remove regression test for Distribute issue #318. The continuing relevance of this test is questionnaible, given that user installs of setuptools no longer imply user installs of other packages. Ref #360.