extras merging

[Bill Nottingham]

Michael Schwendt (bugs.michael at gmx.net) said: 
> > The idea would be that, until everyting *is* rebuilt, the old versions
> > would still be available for use. Much like Core packages in rawhide
> > that aren't rebuilt yet.
> 
> When is everything rebuilt?

When it's rebuilt. It's easy enough to kick off a mass rebuild,
and clean up the stragglers later.

> How do we keep track whether everything is rebuilt?

If you keep the trees of built packages separate until they're combined
for the download site, it's easy.

Bill