net GIT trees on github

I finally broke down and started putting some trees up on github.

The plain 'net' tree is up already:

	git://github.com/davem330/net.git

And a "net-next.git" will be there shortly.

This is a temporary situation so that I can push out the backlog
a little bit until kernel.org is fully back in service.  Once
kernel.org is back I will stop updating these trees.

Thanks.