Change event mode to a CoinMode (since using COIN_PAY and EventMode at the same time doesn't make sense).

Split ScreenLogo and ScreenTitleMenu.
In ScreenTitleMenu, add a different animation if using COIN_HOME (for SMMAX2).
Added codes at TitleMenu to change Theme and Announcer.

stepmania/src/ScreenHowToPlay.cpp

@@ -69,6 +69,7 @@ ScreenHowToPlay::ScreenHowToPlay() : ScreenAttract("ScreenHowToPlay")
 ScreenHowToPlay::~ScreenHowToPlay()
 {
 	delete m_pSong;
+	GAMESTATE->m_pCurSong = NULL;
 }
 
 void ScreenHowToPlay::Update( float fDelta )