* lily/slur-configuration.cc (fit_factor): more robust check for

* lily/slur-configuration.cc (fit_factor): more robust check for
point in curve X-extent.

* lily/slur.cc (outside_slur_callback): return offset_scm, not 0.
(outside_slur_callback): check for 'outside avoidance.

* lily/slur-configuration.cc (score_extra_encompass): don't use
bound->column() == avoid->column() for checking extents, as this
doesn't work for accidentals.

* lily/slur-engraver.cc (acknowledge_extra_object): remove
DynamicText hardcoding.