- Added universal CommandError handling to the #invoke method of MUES::Command   so each command doesn't have to provide its own handler.
- Added universal CommandError handling to the #invoke method of MUES::Command
  so each command doesn't have to provide its own handler.

--HG--
extra : convert_revision : svn%3A39a105f4-52d6-0310-bb1b-d6517044f2e4/trunk%40779

ged/mues