[ANNOUNCE] repo.or.cz now supports "project forks"

  Hi,

  FYI, the http://repo.or.cz/ public Git hosting now supports project
forking, which basically means that if you've done something cool to an
existing project and want to publish your work, you can create a "fork"
of the project on repo.or.cz and it will group nicely together in gitweb
and users will be hinted about the possibility to use --reference when
cloning your changes; also, repo.or.cz disk space will be conserved
thanks to the alternates mechanism. ;-)

  The other main goal aside gitweb grouping wasn't achieved yet though -
greatly reduced push times. Hey, pushing Git to a new repository takes
inordinate amount of time (actually also mostly because all the objects are
unpacked on the remote side, which is silly as well), I didn't try pushing
Linux kernel to a fresh repository but it'll likely take ages. The idea
would be to make git-receive-pack take alternates into account when
announcing what commits does the server side have, but someone will need
to code up a patch for that...

  It wasn't tested heavily, so please tell me about any warts you hit.

  Thanks,