simplify: add SetInputMode, like SetNavigation (rest of commit coming)

stepmania/src/ScreenEditCourse.cpp

@@ -139,7 +139,7 @@ void ScreenEditCourse::Init()
 	vDefs.push_back( def );
 	vHands.push_back( NULL );
 
-	ScreenOptions::InitMenu( INPUTMODE_SHARE_CURSOR, vDefs, vHands );
+	ScreenOptions::InitMenu( vDefs, vHands );
 
 	AfterChangeValueInRow( GAMESTATE->m_MasterPlayerNumber );
 }