Re: add general_alignment (issue 2613) (issue 6308093)

[janek . lilypond]

Hi all,

i've found why it was breaking make - an interface for properties was
missing.  It is added now.

I've decided not to change any grob properties with this patch (i.e.
only add new method, not use it yet).  Thus, there should be no
regressions at all.
Nevertheless, it's possible to override X-offset property on the ly code
to use this:
\override LyricText #'X-offset =
  #(ly:make-simple-closure (ly:make-simple-closure
     (list ly:self-alignment-interface::general-x-alignment)))

This is no longer a draft; let me know if it's ready to be added to the
source.

cheers,
Janek

http://codereview.appspot.com/6308093/