Update language service with latest FSharp.Compiler.Service API changes
Update language service with latest FSharp.Compiler.Service API changes

fsharp/xamarin-monodevelop-fsharp-addin,fsharp/fsharpbinding,nosami/xamarin-monodevelop-fsharp-addin,Ming-Tang/fsharpbinding,Ming-Tang/fsharpbinding,fsharp/fsharpbinding,fsharp/fsharpbinding,Ming-Tang/fsharpbinding,nosami/xamarin-monodevelop-fsharp-addin,fsharp/xamarin-monodevelop-fsharp-addin