[Banner, FadingBanner] Various changes:

* Removed (now unused) All Music banner.
  * Fixed swapped ScrollRandom and ScrollRoulette metrics.
  * Added GetScrolling(), GetPercentScrolling() and SetScrolling(bool,float)
    Lua bindings.

src/FadingBanner.h

@@ -19,7 +19,6 @@ public:
 	 * resolution banner, set bLowResToHighRes to true. */
 	void Load( RageTextureID ID, bool bLowResToHighRes=false );
 	void LoadFromSong( const Song* pSong );		// NULL means no song
-	void LoadAllMusic();
 	void LoadMode();
 	void LoadFromSongGroup( RString sSongGroup );
 	void LoadFromCourse( const Course* pCourse );
@@ -45,11 +44,11 @@ protected:
 	void BeforeChange( bool bLowResToHighRes=false );
 
 	static const int NUM_BANNERS = 5;
-	Banner		m_Banner[NUM_BANNERS];
+	Banner	m_Banner[NUM_BANNERS];
 	int		m_iIndexLatest;
 
-	bool		m_bMovingFast;
-	bool		m_bSkipNextBannerUpdate;
+	bool	m_bMovingFast;
+	bool	m_bSkipNextBannerUpdate;
 };
 
 #endif