- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

$Id$ -> $FreeBSD$

Add some examples of how to throw a window up on your display when
the peer demands authentication, and add some more detail to the
example configurations.

This is the first time I've written any TCL, so I'd appreciate it
if someone eyeballed the *-auth stuff and fixed any glaring problems.