Add some network config bits. Handle new systemd 197 behaviour of renaming networking devices by a dummy udev rule. For the moment we like our network interface names just the way they are thanks.
Trivial commit, update configs to upstream versions. No behaviour change.
Improve sysctl.conf comments per upstream and switch on SysRq in case of kernel bobos.
Add bitlbee config bits and a config for makepkg used by Arch Build System ABS.