redirect %TEMP% and %TMP% to point to the build output (#2837)
redirect %TEMP% and %TMP% to point to the build output (#2837)

This ensures all files can be cleaned up between official builds.
Jand42/FSharp.Compiler.Service,brettfo/visualfsharp,dsyme/fsharp,fsharp/fsharp,fsharp/fsharp,dsyme/FSharp.Compiler.Service,cloudRoutine/FSharp.Compiler.Service,syeerzy/visualfsharp,syeerzy/visualfsharp,Jand42/FSharp.Compiler.Service,ncave/FSharp.Compiler.Service,syeerzy/visualfsharp,ncave/FSharp.Compiler.Service,dsyme/fsharp,fsharp/fsharp,brettfo/visualfsharp,sergey-tihon/FSharp.Compiler.Service,dsyme/fsharp,brettfo/visualfsharp,syeerzy/visualfsharp,ncave/FSharp.Compiler.Service,dsyme/fsharp,brettfo/visualfsharp,dsyme/FSharp.Compiler.Service,dsyme/fsharp,brettfo/visualfsharp,cloudRoutine/FSharp.Compiler.Service,syeerzy/visualfsharp,dsyme/fsharp,sergey-tihon/FSharp.Compiler.Service,Jand42/FSharp.Compiler.Service,brettfo/visualfsharp,dsyme/fsharp,syeerzy/visualfsharp,sergey-tihon/FSharp.Compiler.Service,dsyme/FSharp.Compiler.Service,cloudRoutine/FSharp.Compiler.Service