r215261 - Add tests for coverage mapping generation.

[Justin Bogner]

Justin Bogner <mail at justinbogner.com> writes:
> I've reverted this test since it's failing on a few buildbots.
>
> Alex, please look into the failures and resubmit a fixed test.

More of these tests were failing on windows (ie, class.cpp), so I've
reverted the whole patch in r215278. You should be able to reproduce
these other failures with -triple x86_64-windows-msvc.