[ardour-dev] latest CVS commit

[Paul Davis]

  * fix another deep problem with region list management,
      region copy operations etc.

  * finish fix to make pan link buttons always say "link"
   
  * remove diskstreams when audio tracks are removed
     (this was causing a guaranteed segfault when
      the track was rec-enabled, and may have been
      responsible for other segfaults-after-remove)

  * ardour/gtk: 0.510.1
    libardour:  0.810.0

(release of beta14 coming right up)