[horde] Tracking modules after release

[Chuck Hagenbuch]

Quoting Jan Schneider <jan at horde.org>:

> So a third option might be to install the final versions of the released
> application and stick with HEAD for the other ones. But there is no
> guarantee that this will really work.

The idea is to guarantee it as long as we can, though, with the only exception
being that apps may require new versions of any of the framework packages. So
we'll see how long that works.

-chuck

-- 
"But she goes not abroad in search of monsters to destroy." - John 
Quincy Adams