patches for ipsec packet filtering support in ipfw2

[clemens fischer]

* Ari Suutari:

> Here are two small patches (done on 5.1-RELEASE, but should be ok
> for -current also) which add new "ipsec" flag to ipfw2.

i did not receive any attachments.  will this functionality be
included into freebsd-5 in the future?

  clemens