fsharp/fsharp — pull request #175 by Heather (2013-11-13 06:26:43+00:00)
Title: "Fix" .bat script MSBuild compilation

If there is newer F# (3.1) installed then MSBuild will fail in bootstrap
with following error ->

FSC : error FS1223: FSharp.Core.sigdata not found alongside FSharp.Core

So I simply COPY it.... And it helps.
I know that this solution may look a bit complex but for my personal opinion it may be merged.