make animation system and rna internals use getattr style syntax for user defined properties

bone["foo"] rather then bone.foo
matches python and avoids naming collisions

release/scripts/modules/rna_prop_ui.py

@@ -100,7 +100,7 @@ def draw(layout, context, context_member):
             if convert_to_pyobject and not hasattr(val_orig, "len"):
                 row.itemL(text=val_draw)
             else:
-                row.itemR(rna_item, key, text="")
+                row.itemR(rna_item, '["' + key + '"]', text="")
                 
             
             row = split.row(align=True)