Use Init() for all screens, so we can set state before the base class

members are loaded--they'll see resets, score finalization, etc.  It
also results in smaller code, due to a g++ bug that causes constructors
to be emitted several times.

stepmania/src/ScreenInstructions.cpp

@@ -39,6 +39,11 @@ ScreenInstructions::ScreenInstructions( CString sName ) : ScreenWithMenuElements
 
 	if( GAMESTATE->m_PlayMode == PLAY_MODE_INVALID )
 		RageException::Throw( "The PlayMode has not been set.  A theme must set the PlayMode before showing ScreenInstructions." );
+}
+
+void ScreenInstructions::Init()
+{
+	ScreenWithMenuElements::Init();
 
 	m_sprHowToPlay.Load( THEME->GetPathG(m_sName,PlayModeToString(GAMESTATE->m_PlayMode)) );
 	m_sprHowToPlay.SetXY( SCREEN_CENTER_X, SCREEN_CENTER_Y );