Clean up interface between framework, ivis_opengl and main, reducing dependencies that go the wrong way.
Removing unnecessary header file frameint.h
Move the tiny contents of iV_ShutDown() into screenShutDown() and shut down ivi.h and ivi.cpp
Remove dead code, which means removing two entire files.
Don't wait one minute before showing an errror in the console. That is the wrong way to implement throttling...