Method getWorldFileExt added

formats/raster.py

@@ -48,6 +48,9 @@ class Raster(object):
     def getHeaderFileExt(self):
         return const.HEADEREXT 
     
+    def getWorldFileExt(self):
+        return const.WORLDFILEXT   
+    
     def close(self):
         try:
             if self.datafile: