cleanup:

"GroupName" -> "SongGroup" to make room for CourseGroup
replace checks for "cvs" with a call to StripCvs()
m_Rows -> m_pRows
broadcast on preferred group changes

stepmania/src/FadingBanner.cpp

@@ -178,9 +178,9 @@ void FadingBanner::LoadMode()
 	m_Banner[m_iIndexLatest].LoadMode();
 }
 
-void FadingBanner::LoadFromGroup( CString sGroupName )
+void FadingBanner::LoadFromSongGroup( CString sSongGroup )
 {
-	const CString sGroupBannerPath = SONGMAN->GetGroupBannerPath( sGroupName );
+	const CString sGroupBannerPath = SONGMAN->GetSongGroupBannerPath( sSongGroup );
 	LoadFromCachedBanner( sGroupBannerPath );
 }