adding convenience function: to_list

Author: roman_yakovenko

pygccxml/declarations/mdecl_wrapper.py

@@ -88,3 +88,9 @@ def __getattr__( self, name ):
 
     def __contains__( self, item ):
         return item in self.declarations
+
+    def to_list(self):
+        l = []
+        for d in self.declarations:
+            l.append( d )
+        return l