- Keep the parent process alive until the daemon has finished
initialisation, to make sure that the PID file exists when the
parent returns (ntp-daemonize.patch).

- Update to 4.2.8p8 (bsc#982056):
* CVE-2016-4953, bsc#982065: Bad authentication demobilizes
ephemeral associations.
* CVE-2016-4954, bsc#982066: Processing spoofed server packets.
* CVE-2016-4955, bsc#982067: Autokey association reset.
* CVE-2016-4956, bsc#982068: Broadcast interleave.
* CVE-2016-4957, bsc#982064: CRYPTO_NAK crash.
- Change the process name of the forking DNS worker process to
avoid the impression that ntpd is started twice (bsc#979302).
- Don't ignore SIGCHILD because it breaks wait() (boo#981422).
- ntp-wait does not accept fractional seconds, so use 1 instead of
0.2 in ntp-wait.service (boo#979981).
- Separate the creation of ntp.keys and key #1 in it to avoid
problems when upgrading installations that have the file, but
no key #1, which is needed e.g. by "rcntp addserver".