Fix loading maestro projects with instruments that have apostrophes

(Traveller's Trusty Fiddle and Student's Fiddle)

src/com/digero/common/abc/LotroInstrument.java

@@ -104,7 +104,7 @@ public boolean isPlayable(int noteId)
 
 	public static LotroInstrument parseInstrument(String string) throws IllegalArgumentException
 	{
-		string = string.toUpperCase().replaceAll("[\\s_]", "");
+		string = string.toUpperCase().replaceAll("[\\s_']", "");
 
 		if (string.equals("LUTE"))
 			return DEFAULT_LUTE;