This update of dhcp fixes two Denial of Service
(CVE-2011-2748, CVE-2011-2749) vulnerabilities caused by
specially crafted BOOTP packets.

Also following bugs were fixed:
- Moved server pid files into chroot directory even chroot
is not used and create a link in /var/run, so it can
write one when started as user without chroot and avoid
stop problems when the chroot sysconfig setting changed
(bnc#712438).
- Fixed dhclient-script to not remove alias IP when it
didn't changed to not wipe out iptables connmark when
renewing the lease (bnc#700771). Thanks to James Carter
for the patch.
- Removed GPL licensed files (bind-*/contrib/dbus) from
bind.tgz to ensure, they're not used to build non-GPL
dhcp.
- Disabled log-info level messages in dhclient(6) quiet
mode to avoid excessive logging of non-critical messages
(bnc#711420).