FEATURE REQ: add gloval option -v and --verbose

[Jari Aalto]

The output of the commands is currently as minimal as possible, which 
is good. But it would be nice if one could ask for more output to see
the progress and possible reasons for no-output. E.g.

    $ bzr add this.txt
    <nothing>

    "Ahem? Had I already added this file to repository...?"

In contrast to:

   $ bzr --verbose add this.txt
   bzr:  going to add this.txt
   bzr: nope, it's already versioned
   $

   "<lamp shining inside head>. Yes!"

Similarly for other commands.

Jari