Add a vendored copy of packaging
Implement PEP 440 by using the packaging library
Merge github pull request #13 (dstufft/setuptools:use-packaging).
Update changelog with references to changes.
Avoid trailing comments
Fix indent
Prefer packaging library if available.
Update requirements
Bump to 7.0 in preparation for next release.
Added tag 7.0b1 for changeset 8b8a52665803
Merge branch 'master' into use-packaging

Conflicts:
	.hgtags
	CHANGES.txt
	ez_setup.py
	setuptools.egg-info/requires.txt
	setuptools/version.py
Upgrade packaging to 14.3
Remove packaging from setup.py
Always use the vendored copy of packaging
Fix the use of pacakging.version.Specifier
fix left over merge indicator
Added tag 8.0b1 for changeset 850a5c155c48
Merge with 8.0b1 (use packaging for version specifiers)
Added tag 8.0 for changeset 7ea0e7498e4d