- 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

MFC r273703:

Remove the ARM_DEVICE_MULTIPASS option and make its effect be the default.

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

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

Set machine correctly on ARM. This allows universe to use the correct world
when building each kernel.

Reviewed by: imp

Unbreak ATMEL kernel build

These files will support the whole at91sam9x5 family when done,
so rename them now before they get copied further afield...

Add new at91sam9g45 support and sn9g45 board to the ATMEL kernel.
Adapt SN9G45 board support to cope with multi-board.

Create a pseudo-lint kernel for all at91 SoCs. This kernel will not
currently boot, but will serve as a good linting. make universe could
now be altered to skip building all the other at91 kernels...