Now, Cloo is referenced as a proper git submodule

This commit turns the Cloo/ subdir with binary objects in it into a reference to the sf.net git repository. This will allow you to avoid having to maintain binary objs and pin each of your commits to a corresponding one of Cloo's. BitMaker.sln has the changes to use the project as a reference instead of the .dll. Use "git submodule update --init" after checking out a repo to clone it's referenced repositories.