Add a VS2013 job which would otherwise fail, see #153
Note that VS2013 is NOT supported by Boost.Wave anymore due to incomplete C++11 support. The added requirement makes it skip building Boost.Wave on that (and possibly other affected) compiler(s) avoiding a hard error.
This is required as of https://github.com/boostorg/wave/blob/develop/build/Jamfile.v2#L15
Add a VS2013 job which would otherwise fail, see #153
Note that VS2013 is NOT supported by Boost.Wave anymore due to incomplete C++11 support. The added requirement makes it skip building Boost.Wave on that (and possibly other affected) compiler(s) avoiding a hard error.