This update for mate-menu fixes the following issues:

- Update to 5.6.7:
+ Fix intends in mate-menu execute.py.
+ Do not use mate-folder.png that doesn't exist in freedesktop
specification.
+ Fix configurator crash due to changes in Gtk 2.24.29.
+ Do not crash if lsb_release is not available (boo#959024).
- Only recommend lsb-release.