- Copy stable/10@285827 to releng/10.2 in preparation for 10.2-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.2.
- Update default pkg(8) configuration to use the quarterly branch.[1]

Discussed with: re, portmgr [1]
Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

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

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

fix the kernel files to match our standard "option<space><tab>" format
such that when commenting/uncommentting lines, horizontal spacing is
maintained...

Also fix some minor comment formatting to line things up, etc...

Reviewed by: gnn, imp
MFC after: 1 week

Strip trailing whitespace.

The GUMSTIX-QEMU config file is almost identical to the GUMSTIX config,
include the latter file from the former rather than duplicating it.

- Add kernel config file for QEMU-emulated gumstix board.