patches/packages/ntp-4.2.8p18-x86_64-2_slack15.0.txz: Rebuilt.
This is a bugfix release to fix a possible regression. In some cases ntpd
gets an error on mixed ipv4/ipv6 networks, so we'll make it possible to
easily configure ntpd to use ipv4 only or ipv6 only (as well as to change
any other ntpd options).
rc.ntp: properly create the PID file on start.
Add /etc/default/ntp to configure ntpd startup options since some people are
needing to add -4 to avoid an error.
Thanks to rkelsen and teoberi.