[0.14] Improving bzr add: Add option --message (for auto 'ci')

[Jari Aalto]

Consider this:

   $ bzr add file.conf
   ...wait a while
   $ bzr ci -m "- Added configuration file" file.conf
   ...wait a while

SUGGESTION

The 'add' command could simultaneously also do the checking for
initial imports and the above would be 1-step process:

  $ bzr ci -m "- Added configuration file" file.conf

This would also reduce the wait time and need to type two separate
commands.

Jari