Packages on which Thunderbird functionality depends!

[Bill Nottingham]

Stephen Gallagher (sgallagh at redhat.com) said: 
> I'm not a Thunderbird maintainer, so I don't know how feasible this is,
> but perhaps we could create a subpackage like
> 'thunderbird-sound-support' that has the appropriate dependencies on it.
> Then at least someone doing a yum search on thunderbird would notice
> that and assume they probably wanted it (if they're hitting the same issue).

Just changing the package requires seems far simpler to me.

Bill