Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Fix a problem whereby a corrupt DNS record can cause named to crash. [11:06]

Add an API for alerting internal libc routines to the presence of
"unsafe" paths post-chroot, and use it in ftpd. [11:07]

Fix a buffer overflow in telnetd. [11:08]

Make pam_ssh ignore unpassphrased keys unless the "nullok" option is
specified. [11:09]

Add sanity checking of service names in pam_start. [11:10]

Approved by: so (cperciva)
Approved by: re (bz)
Security: FreeBSD-SA-11:06.bind
Security: FreeBSD-SA-11:07.chroot
Security: FreeBSD-SA-11:08.telnetd
Security: FreeBSD-SA-11:09.pam_ssh
Security: FreeBSD-SA-11:10.pam

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Bump our namespace version for 9.0.

Add a comment about keeping the private namespace at the end of
the dependency chain.

Keep versions on a dependency chain to exclude even remote possiblity
of private version ever getting index 2.

Add a comment stating not to bump the FBSDprivate version.

Don't inherit the public namespace from the private namespace.

Retire the __fgetcookie(), __fgetpendout(), and __fsetfileno() accessors
as we aren't hiding FILE's internals anymore.

Add __fgetcookie(), __fgetpendout() and __fsetfileno() to the private
name space.

Increment the version namespace for 8.0-current. New symbols and
symbols whose ABI has changed should be added to FBSD_1.1.

Make sure FBSDprivate_1.0 is located at the end of the version
inheritance chain.

Number the private version namespace in case we ever want to have
compatibility between versions (as we do for the public namespace).

Add symbol maps and initial symbol version definitions to libc.

Reviewed by: davidxu