Backport support for file:// directory URLs in --find-links to 0.6 branch.
Backport support for file:// directory URLs in --find-links to 0.6
branch.

--HG--
branch : setuptools-0.6
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/branches/setuptools-0.6%4045556

pypa/setuptools,pypa/setuptools,pypa/setuptools