Revert "Merge pull request #95 from apeel/master"

This reverts commit 5f6f173d61e60da821de961e2b4db6f64075a7b0, reversing
changes made to 9bb3df8632305f5b72e271b80e44f0ced07f58fe.

Conflicts:
	Source/Moq.csproj
Point to latest msbuild engine.