None of the above patches are mandatory to have a working Bering distro. Those patches only add extra functionalities. You may consider that you do not need any of them.
The freeswan ipsec 1.99 patch is only needed if you need ipsec support.
The newnat13 patch add h323, pptp, tftp support to netfilter. They come from Koepi's web site.
The unclean1 patch comes from Tom Eastep. See the dropunclean option of the Interfaces option.
The htb2 patch is only needed if you want htb support. See also the Shorewall documentation chapter on Traffic Shaping/Control.
The bridge-nf patch is only needed if you want to have bridge firewalling support.
The mmpe-patch is needed if you want to run a PPTP server on your Bering box.
The grsecurity patch adds extra security to your Bering kernel.