- 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)

MFC r292585:

Prevent use-after-free with ctx->ns in set_nameservers(..), which could occur
if the memory wasn't allocated again later on

Reported by: Coverity
Submitted by: Miles Ohlrich <miles.ohlrich@isilon.com>
Sponsored by: EMC / Isilon Storage Division

Merge r268298,r268299 from head:
Correct format string to fix build of uhsoctl when DEBUG is defined

PR: 185007
Submitted by: saper saper.info

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

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

Add an missing argument to open(2). If O_CREAT flag is specified,
file permission has to be specified as well.

In usr.sbin/uhsoctl/uhsoctl.c, fix a few warnings about format strings
not being literals.

MFC after: 1 week

- Fixed automatic detection of the control serial port.
- Fixed segmentation fault when an invalid network interface was given.
- More helpful message in case of wrong PIN number.

Submitted by: Fredrik Lindberg

Add a driver by Fredrik Lindberg for Option HSDPA USB devices. These differ
from standard 3G wireless units by supplying a raw IP/IPv6 endpoint rather than
using PPP over serial. uhsoctl(1) is used to initiate and close the WAN
connection.

Obtained from: Fredrik Lindberg <fli@shapeshifter.se>