* lily/simple-spacer.cc (add_columns): use binary search for

* lily/simple-spacer.cc (add_columns): use binary search for
setting column rods. Changes O(n^2) to O(n log(n)) for
constructing spacing problem from columns.
(add_columns): read allow-outside-line to make sure no texts stick
out.
(solve): Simple_spacer::is_active() only determines
satisfies_constraints_ for non-ragged typesetting.

* lily/simultaneous-music.cc (to_relative_octave): only set
old_relative_used if return pitch actually changed.

* scm/define-context-properties.scm
(all-user-translation-properties): change to match implementation.

* python/lilylib.py: Replace re.match by re.search and adds "-c
showpage" to the gs command line (Johannes Schindelin)