Make* -> Driver::Create. Having these floating in arch.h isn't

useful; if you create the class, you need the class definition to
free it, and anyone creating a class is probably going to use it,
too.

stepmania/src/arch/LoadingWindow/LoadingWindow.cpp

@@ -4,7 +4,7 @@
 #include "RageLog.h"
 #include "arch/arch_default.h"
 
-LoadingWindow *MakeLoadingWindow()
+LoadingWindow *LoadingWindow::Create()
 {
 	if( !PREFSMAN->m_bShowLoadingWindow )
 		return new LoadingWindow_Null;