versioning in vendor distributions

[Danek Duvall]

Matt,

I'm about to integrate 1.0 into Solaris, but Rich tells me that we need
issue 1052 solved.  That's fine, but I didn't like his change to
__version__.py, which turned "1.0" into "1.0-osol1".

Another idea would be to do to mercurial as we do to perl: split out a list
of locally applied patches when calling "perl -V".  I just wanted to make
sure that modifying mercurial in this way (changing the output of "hg
version" to have a list of patches applied, below the copyright statement)
is something you'd be okay with.

If you want, I can supply a patch to version.py that would get that list
from __version__.py; otherwise, I'd probably just keep it as a Solaris-only
patch.

Thanks,
Danek