InteropGen - baseclass definitions are namespace optional
Added IServerEntity.GetManagedPointer()
Bind IServerEntity
Folding Sandbox.Source.Engine into Sandbox.Engine
Define fixes
Update soundscape.cpp
Combine interop for Sandbox.Engine/Source.Engine
Engine def cleanup
Interop - don't generate types if type already exists in assembly
Merge Sandbox.Entity with Sandbox.Engine
Make Sandbox.UI shared source, include in Engine
Cleanup