* clef-key-distance.ly: add note.

* clef-key-distance.ly: add note.

* lily/grob-closure.cc (add_offset_callback): bugfix: properly add
offset callbacks. This fixes alignment for Fingering objects.

* scm/define-grobs.scm (all-grob-descriptions): tiny bit less
space for key - timesig combination.

* input/regression/script-stem-tremolo.ly (Module): new file.

* scm/define-grobs.scm (all-grob-descriptions): decrease distance
to key sig.

* lily/dynamic-engraver.cc (acknowledge_stem_tremolo): new function.

* lily/text-engraver.cc (acknowledge_stem_tremolo): new function.

* lily/script-engraver.cc (acknowledge_stem_tremolo): new function.

* scm/define-grobs.scm (all-grob-descriptions): remove
self-X-offset. Fixes alignment of octavate-8.

* scripts/lilypond-book.py (datadir): look in
LILYPONDPREFIX/share/lilypond/current/

* GNUmakefile.in: symlink current to <VERSION>.