Fedora package renaming proposal

In Fedora we have the following bindings packages:

* python-qpid - pure Python bindings
* python-qpid_messaging - Swig bindings for Python
* perl-qpid - Swig bindings for Perl
* rubygem-qpid_messaging - Swig bindings for Ruby

Two issues were brought up with this:

1) The names are inconsistent, since Perl doesn't follow the same
naming convention as Ruby and Python.
2) Fedora recommends against using an underscore in a package's name [1].

This last issue doesn't come up in Debian and Ubuntu since packages
there were never allowed to have an underscore in their name since it's
only allowed to be the delimiter between name and version for a package.

To make things more consistent, and to abide by the naming rules, I'd
like to do the following:

* rename perl-qpid to perl-qpid-messaging
* rename rubygem-qpid_messaging to rubygem-qpid-messaging
* rename python-qpid_messagin to python-qpid-messaging

In each case the package would continue, for two releases of Fedora,
to obsolete and provide the previous package to allow a transition
period for any other packages. But I think this would get things to a
more consistent and discoverable state.

[1] http://fedoraproject.org/wiki/Packaging:NamingGuidelines#Separators