Updated SA-15:25 patches

Full patches (relative to an unpatched tree)

To apply one of these patches:

# cd /usr/src
# fetch https://people.freebsd.org/~des/SA-15:25/ntp-N.patch.xz
# fetch https://people.freebsd.org/~des/SA-15:25/ntp-N.patch.xz.asc
# gpg --verify ntp-N.patch.xz.asc
# xzcat ntp-N.patch | patch -p0

Patches relative to the current tree

To apply one of these patches:

# cd /usr/src
# fetch https://people.freebsd.org/~des/SA-15:25/ntp-N-inc.patch
# fetch https://people.freebsd.org/~des/SA-15:25/ntp-N-inc.patch.asc
# gpg --verify ntp-N-inc.patch.asc
# patch -p0 <ntp-N-inc.patch

If buildworld fails on 9.3

On 9.3, there is a possibility that buildworld will fail with an error message like this:

===> usr.sbin/ntp/libopts (depend)
rm -f .depend
mkdep -f .depend -a    -I/usr/src/usr.sbin/ntp/libopts/../../../contrib/ntp/incl
ude -I/usr/src/usr.sbin/ntp/libopts/../../../contrib/ntp/sntp/libopts -I/usr/src
/usr.sbin/ntp/libopts/../ -DSYS_FREEBSD -DPARSE -DHAVE_CONFIG_H -DOPENSSL -DUSE_
OPENSSL_CRYPTO_RAND -DAUTOKEY -std=gnu99   /usr/src/usr.sbin/ntp/libopts/../../.
./contrib/ntp/sntp/libopts/libopts.c
In file included from /usr/src/usr.sbin/ntp/libopts/../../../contrib/ntp/sntp/li
bopts/libopts.c:14:
/usr/src/usr.sbin/ntp/libopts/../../../contrib/ntp/sntp/libopts/autoopts.h:35:25
: error: stdnoreturn.h: No such file or directory
mkdep: compile failed
*** [.depend] Error code 1

If that happens, please apply the patch below:

To apply this patch:

# cd /usr/src
# fetch https://people.freebsd.org/~des/SA-15:25/stdnoreturn-93.patch
# fetch https://people.freebsd.org/~des/SA-15:25/stdnoreturn-93.patch.asc
# gpg --verify stdnoreturn-93.patch.asc
# patch -p0 <stdnoreturn-93.patch