Add a test for the Windows issue of actual_path.
Add a test for the Windows issue of actual_path.

--HG--
branch : ionelmc/correct-path-normalization-on-windows-th-1433618255921

hugovk/coveragepy,nedbat/coveragepy,7WebPages/coveragepy,hugovk/coveragepy,blueyed/coveragepy,larsbutler/coveragepy,hugovk/coveragepy,7WebPages/coveragepy,7WebPages/coveragepy,jayhetee/coveragepy,nedbat/coveragepy,jayhetee/coveragepy,jayhetee/coveragepy,blueyed/coveragepy,7WebPages/coveragepy,larsbutler/coveragepy,nedbat/coveragepy,blueyed/coveragepy,larsbutler/coveragepy,nedbat/coveragepy,blueyed/coveragepy,hugovk/coveragepy,hugovk/coveragepy,jayhetee/coveragepy,jayhetee/coveragepy,larsbutler/coveragepy,larsbutler/coveragepy,nedbat/coveragepy,blueyed/coveragepy