Lots of netfilter hacking over the last couple of days

Following-up meeting the other networking hackers at netconf, I got really extremely motivated and basically spent every single minute hacking code.

The projects include:

• skb shrinkage (already merged in DaveM's net-2.6.14 tree)
• nfnetlink (already merged in DaveM's net-2.6.14 tree)
• conntrack event notifiers (already merged in DaveM's net-2.6.14 tree)
• ctnetlink (reworked to use network byte order in all the payload)
• nfnetlink_queue (a nfnetlink-based queue implementation)
• vdev (a virtual device that allows you to use multiple mac addresses on one Ethernet device)
• mmio_test (include support for machine-parseable reporting)