nf_nat tree updated

[Patrick McHardy <kaber@trash.net>]

I've rebased my nf_nat tree on top of Dave's net-2.6.20 tree
(actually on top of my non-nf_nat patches on top of net-2.6.20)
and uploaded the latest version to my people.netfilter.org space.

The tree includes only my local changes, you need to pull it
into a net-2.6.20 tree like this:

git-clone git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.20.git
cd net-2.6.20.git
git-pull http://people.netfilter.org/~kaber/nf-2.6.20-nat.git/

Changes this the last version include:

- porting of all remaining conntrack/NAT helpers
- resync with changes to IPv4 conntrack/NAT, mainly Al Viro's
  endian annotations
- multiple small fixes

Next I'm going to integrate Jozsef's patch for the helper
assignment problem.

A few questions:

- this seems like a good chance to get rid of the helper naming
  inconsistencies (nf_conntrack_helper_* vs nf_conntrack_*).
  Should we rename all helpers to nf_conntrack_helper_XXX? We
  have to provide module aliases for the old names anyway ..

- /proc-compatibility: since the plan is to get rid of the
  old IPv4-only connection tracking ASAP, we need to think
  of something to keep old scripts fiddling with /proc-files
  working. So we probably need to do some symlinking (is that
  possible?) of the old net/ipv4/netfilter files or just keep
  the around as normal files. And we need a /proc/net/ip_conntrack
  that only shows IPv4 entries I suppose.

- anything else we need to do for a drop-in replacement?