VMM/cli/clihelp: Two small improvements:
- Unified `wild card search' help messages.
- Added a comment for xgettext, so it should no longer make a wrong
decision about `python-format'.
=============
Upgrading vmm
=============
Upgrade instructions for different versions of vmm.
.. toctree::
:maxdepth: 1
upgrade/0.5-0.6
upgrade/0.4.x-0.5