dhcp.mk.diff (kristov)
* Properly configures the paths to the DHCP(v6) lease and PID files.
* Adds --disable-failover, --disable-execute, and --disable-tracing to
  configure call for smaller binaries.
* Adds a dependency to dhcp-bind.

dhcp-xen-checksum.patch (Redhat, kristov)
* Eliminates problems with wrong UDP checksums when running dhclient and the
  corresponding DHCP server in VMs on the same host.
