Write FreeBSD-Upgrade file (completed)

Remove unneeded files from head/ (completed), write FreeBSD-Xlist file (completed)

(?) unifdef ip_compat.h and take control over it (completed)

Adopt John's patch: http://lists.freebsd.org/pipermail/freebsd-net/2012-August/033139.html (committed by r255755)

Review all PRs with tag [ipfilter]

Get sysctl nodes working again (currently #ifdef'd out – partially resolved, those in ipfmain struct OK)

ipnat sysctl nodes not defined/mis-defined

Review/close all Coverity reports

Resolve: panic: lock “ipf log mutex” 0xfffff80005e5d188 already initialized when ipf -E (enable) entered following ipf -D (disable). (Resolved)