Tied harmonics in tablature - tracker issue

[Marc Hohl]

Hello list, hello Valentin (I think you are the master of the tracker),

Federico Bruni raised this issue long ago, see

http://lists.gnu.org/archive/html/lilypond-user/2010-05/msg00355.html

I made some attempts to get this done, but the "almost" solution I
reached didn't satisfy me completely (it looks to me rather hackish,
there has to be a more genuine solution without shifting layers and stuff):

http://codereview.appspot.com/1669041

So I think it is best to add this to the tracker, so this issue won't be 
lost.

Thanks,

Marc