Re: add some rarely used mensural clefs (issue 330120043 by address@hidden)

[Benkő Pál]

>> Please review this at https://codereview.appspot.com/330120043/
>
>
> Does this have a tracker or do we need to create one?
>
> I couldn't see one immediately.

no, I'm struggling with it.  seems this is my first contribution since
leaving google code.
(and I had the same regression you had with your arabic.ly modification.)

p