As discussed numerous times, get rid of the submodule approach for core modules and just included the sources directly in the main repository.
I have no idea how this will play with existing working copies. It might be necessary to [manually clear out the existing submodules](http://stackoverflow.com/questions/1260748) first.
The format output is no longer supported by the IDE, instead Visual Studio projects are utilized instead. See issue #604 for more information on deprecation.
