[PATCH] New feature: A-A. Backend

[Valentin Villenave]

Greetings,

Graham's recent 2.14 announcement, as well as Mike's wonderful work on
the Emoticon_engraver (see
http://lists.gnu.org/archive/html/lilypond-user/2011-03/msg00860.html
) made me realize there are other features much more urgently needed
in LilyPond. This requires to add a new backend altogether, which is
pretty hard but since I haven't been of much help recently, I figured
I'd give it a try.

See attached patch.

Cheers,
Valentin.

0001-Add-a-new-backend-with-suitable-A-a.-engraver.patch
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