[ardour-dev] latest CVS commit

[Paul Davis]

   * restored relevant MIDI compile flags (-DWITH_ALSA or
        -DWITH_COREMIDI) for libmidi++
   * added missing fabsf() to peak computation code
   * move peak metering code into a separate header
   * fix erroneous display of name + name highlight bar
       of regions when zooming
   * update latency compensation whenever redirects are	
       added, activated/bypassed, not just at transport stop

   * libardour:  0.881.0
     ardour/gtk: 0.581.2