fix py*-gstreamer depends

[Andrew Pantyukhin]

On 12/4/06, Jeremy Messenger <mezz7 at cox.net> wrote:
> On Mon, 04 Dec 2006 05:30:41 -0600, Michael Johnson <ahze at ahze.net> wrote:
>
> > On 12/4/06, Andrew Pantyukhin <infofarmer at freebsd.org> wrote:
> >> Any objections?
>
> In future, please explain what kind of problem that
> you are seeing. That will get less email to reply
> or argue.

But it would spoil the whole lowly feeling of seeing
a mistake, offering a fix and leaving people clueless.

> > I don't have a problem with it, but why is it needed?
>
> Without test it, but I can see there has a problem.
> There is no USE_PYTHON=yes in bsd.gstreamer.mk to
> make PYTHON_PKGNAMEPREFIX define.

Yes, it's an infrastructure deficiency. In many cases
we can't offer information without dependencies. We
could, but make(1) discourages modularity very much.