Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

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

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Add the SOC_BCM2835 and SOC_BCM2836 options for the arm kernel and add the
former to std.bcm2835. These will be used to enable support for the
Raspberry Pi 2.

MFC after: 1 week

Split out the common bcm283x fixes from the bcm2835 specific files.

Fix module builds on arm (and maybe others) by turning off a whole
raft of new warnings that appear to be on by default in clang 3.5.0.
Fix RPI-B build issues with new clang not liking the ability to pass
arbitrary flags to as, since some flags are more arbitrary (and thus
verboten) than others.

These warnings should be actually fixed in the code, but this is a
band-aide to get things (almost) building again.

Add -march=armv7a to the kernel compile for all ARM systems which are v7a.

Submitted by: Michal Meloun <meloun@miracle.cz>

Move the Raspberry Pi low level options out of the kernel config and into
std.rpi + std.bcm2835.

Reviewed by: imp