* lily/tuplet-bracket.cc (print): suicide if no control-points.

* lily/tuplet-bracket.cc (print): suicide if no control-points.

* lily/tuplet-number.cc (print): new file, new interface.

* lily/tuplet-bracket.cc (calc_control_points): new function
(calc_connect_to_neighbors): new function.
(print): remove text handling for tuplet numberdef.

* scm/define-grobs.scm (all-grob-descriptions): new grob TupletNumber

* lily/tuplet-bracket.cc (calc_position_and_height): use
staff-padding to control whether tuplet brackets are over staves.

* lily/grob.cc (suicide): clear dim_caches_.

* lily/grob.cc (extent): swap order of min-extent and extent
calculations. This fixes hara kiri staves.