* input/test/ac-extra-voice.ly (accompany): remove file.

* input/test/ac-extra-voice.ly (accompany): remove file.

* scripts/convert-ly.py (FatalConversionError.subst_in_trans):
conversion rule for \translator{}. Apply everywhere.

* lily/auto-beam-engraver.cc (test_moment): use
updated_grob_properties() to retrieve autoBeam settings.

* lily/rest-collision.cc (do_shift): ignore rests with beams.
(do_shift): rewrite only-rests case: use common refpoints: the
routine will have sensible results when other rest-translations
have taken place.

* input/GNUmakefile (SUBDIRS): remove ascii-art