Rebase joyride to Fedora 10

[Marco Pesenti Gritti]

Hello,

we are planning to rebase to Fedora 10 for OLPC 9.1 and we would
better start on it asap. I'm not sure what needs to happen at the
build system level exactly but my guess would be:

* Create an OLPC-4 branch based on Fedora 10.
* Create the various dist-olpc4-* tags.
* Move pilgrim to use those.

Who can help with the Fedora side of things?

Thanks,
Marco