suggestion: move all java packages to extras

[Florian La Roche]

> 1. core isn't really feature complete on its own w/o extras. I can't
> install a system and finish it off w/o using extras.
> 
> 2. extras is enabled by default in the final install of fedora core, so
> people can easily get to all of those packages.

Many people want to have their system mostly complete by Fedora Core
installations and then only add a few packages from Fedora Extras.

regards,

Florian La Roche