Added Protobuild definitions for Test projects.
Fixed internals reference.
Removed old Assets project.
Removed old Test projects and solutions.
Fixed asset path.
Ignored Test csprojs.
Tests are now built as part of the desktop platforms.
Merge branch 'develop' into prototest
Fixed effect content paths.
Added content references directly into XNA project.
Removed reference to old asset project.
Fixed NUnit references for Mac and Linux.
Added defines so we can detect platforms.
Loud and ugly work around to bad MacOS GameWindow implementation.
Wrong define!
Another MonoMac hack.
Fixed some more assembly references.
Missed iOS assembly reference.
Another difference in iOS and desktop builds.
Fix for obsolete Exit() on iOS.