* refactored the command/options code:

* refactored the command/options code:
  - now each command class should define a "commands" property with
    documentation, option specs etc.
  - both long and short options are now supported
  - after recent changes to Console_Getopt, you may now have options
    to commands even though the same option is also valid for the pear
    command itself
  - less CLI-centric, better suited to Gtk and Web frontends