patch::: 1.5.38.jcn1

patch::: 1.5.38.jcn1

2002-03-11  Jan Nieuwenhuizen  <janneke@gnu.org>

	* scm/grob-description.scm (Beam): Add concaveness.  Replace
	Beam::cancel_suspect_slope with Beam::check_concave.

	* lily/beam.cc (check_concave): Calculate concaveness of beam, and
	set slope to horizontal if concaveness > Beam.concaveness.  This
	handles cases that kludgy cancel_suspect_slope was meant to catch
	very well.
	(cancel_suspect_slope): Remove.