Move to one-based-line-counting in FCS 0.0.27

See https://github.com/fsharp/FSharp.Compiler.Service/issues/64 for
details.
Merge pull request #105 from dungpa/one-based-line-counting

Move to one-based-line-counting in FCS 0.0.27
Merge branch 'master' into navigate-to-standalone-files