PATCH:72-hour countdown to 20110912

For 22:00 MDT Monday September 12 Issue 1814 : Breve with double-line "ears" can collide with accidentals and barlines - R 4986042 : include lines in breve X-extent Issue 1871

PATCH: 72 hour countdown

New today, for 21:00 MDT Monday July 25 Issue 153 : \once \set fails to restore previous setting - Rietveld Issue 4810042 : Fix 153: \once\set properly restores the context property Issue 620