Added better handling of mscorlib and FSharp.Core with included tests

Also removed the test fsproj as its now generated by the config script
Added missing file
Run tests on Windows (with failures)
Merge pull request #2 from rojepp/checkerfixes

Run tests on Windows (with failures)
Merge pull request #552 from 7sharp9/checkerfixes

Added better handling of mscorlib and FSharp.Core with included tests