[ardour-dev] latest CVS commit

[Paul Davis]

   * region duplication dialog grabs focus
   * don't waste time setting layer of new region, given
       the new layer code
   * "Destroy" on a region or regions now posts a warning
       dialog about its destructive potential and non-undoability. 
   * debug output to track a crashing problem
   * hide panners if a tracks outputs drop below 2, not below 1.
   * libardour: 0.855.1
     ardour/gtk: 0.554.2