preserve language name case in file name if LanguageInfo not available

stepmania/src/RageUtil.cpp

@@ -494,7 +494,7 @@ const LanguageInfo *GetLanguageInfo( const RString &sIsoCode )
 		// and languages that had native forms on the site listed above.
 		// Obscure languages are dropped so that they don't clutter up the 
 		// smtools UI.
-		if( sIsoCode.CompareNoCase(g_langs[i].szIsoCode) == 0 )
+		if( sIsoCode.EqualsNoCase(g_langs[i].szIsoCode) )
 			return &g_langs[i];
 	}
 

stepmania/src/ThemeManager.cpp

@@ -218,6 +218,10 @@ RString ThemeManager::GetThemeDisplayName( const RString &sThemeName )
 	return sThemeName;
 }
 
+static bool EqualsNoCase( const RString &s1, const RString &s2 )
+{
+       return s1.EqualsNoCase(s2);
+}
 void ThemeManager::GetLanguages( vector<RString>& AddTo )
 {
 	AddTo.clear();
@@ -225,12 +229,9 @@ void ThemeManager::GetLanguages( vector<RString>& AddTo )
 	for( unsigned i = 0; i < g_vThemes.size(); ++i )
 		GetLanguagesForTheme( g_vThemes[i].sThemeName, AddTo );
 
-	FOREACH( RString, AddTo, s )
-		s->MakeLower();
-
 	// remove dupes
 	sort( AddTo.begin(), AddTo.end() );
-	vector<RString>::iterator it = unique( AddTo.begin(), AddTo.end() );
+	vector<RString>::iterator it = unique( AddTo.begin(), AddTo.end(), EqualsNoCase );
 	AddTo.erase(it, AddTo.end());
 }