* input/regression/spacing-knee.ly: docstring

* input/regression/spacing-knee.ly: docstring

* input/regression/spacing-multi-tuplet.ly (multipart): docstring

* input/rhythm.ly: remove

* input/mutopia/F.Schubert/standchen.ly: update syntax.

* input/mutopia/E.Satie/petite-ouverture-a-danser.ly (global):
update syntax.

* scm/define-grobs.scm (all-grob-descriptions): set
knee-spacing-correction to 1.0

* scm/define-grobs.scm (all-grob-descriptions): set
beamed-extreme-minimum-free-lengths to 1.25 for 32nd beams.
This fixes 32nd beams for noteheads in spaces quants.