* 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)