Merge pull request #94 from bleskodev/bd/use_multitool

Implement multi processor compilation for dbuild targets.

Author: rainers

msbuild/dbuild/CompileD.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using Microsoft.Build.Framework;
-using Microsoft.Build.Utilities;
 using Microsoft.Build.CPPTasks;
 using System.Collections;
 using System.Resources;