move localized string to separate file

stepmania/src/SongManager.cpp

@@ -34,6 +34,7 @@
 #include "Profile.h"
 #include "CourseLoaderCRS.h"
 #include "TitleSubstitution.h"
+#include "LocalizedString.h"
 
 SongManager*	SONGMAN = NULL;	// global and accessable from anywhere in our program
 
@@ -104,7 +105,6 @@ void SongManager::InitSongsFromDisk( LoadingWindow *ld )
 
 
 static LocalizedString FOLDER_CONTAINS_MUSIC_FILES( "SongManager", "The folder '%s' appears to be a song folder.  All song folders must reside in a group folder.  For example, 'Songs/Originals/My Song'." );
-
 void SongManager::SanityCheckGroupDir( CString sDir ) const
 {
 	// Check to see if they put a song directly inside the group folder.