Make coverage testing optional:
* GCC flags break ccache, thus slowing down build
* Add ENABLE_COVERAGE option, will be used by Buildyard target
* Fail if coverage is enabled but dependencies are missing
Merge branch 'master' of https://github.com/Eyescale/CMake
Update README
Update README
Update README
Update README
Make GitExternal more verbose
Fix git external update
Auto-update GitExternal.cmake
Merge pull request #58 from eile/master

Make coverage testing optional