Fix building of the MonoDevelop.FSharp project in VS2012

Fixes the following:

On windows, after running configure.bat and opening the generated .sln with VS2012, we get this error message:

>"Cannot open F# project 'C:\Gustavo\Forks\fsharpbinding\monodevelop\MonoDevelop.FSharpBinding\MonoDevelop.FSharp.windows.fsproj'. 
>
>This project uses wildcards in item specification: 
>
>'..\dependencies\AspNetMvc4\*' for item type 'Mvc4Files'