- 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

Make sure that each va_start has one and only one matching va_end,
especially in error cases.

Instead of packing the individual fields in the PnP structures, pack the
entire structures. This trims some warnings.

Verified by: md5(1)
MFC after: 1 week

Long-long time ago, when the trees were large and memory expensive amount of
memory directly available to loader(8) and friends was limited to 640K on i386.
Those times have passed long time ago and now loader(8) can directly access
up to 4GB of RAM at least theoretically. At the same time, there are several
places where it's assumed that malloc() will only allocate memory within
first megabyte.

Remove that assumption by allocating appropriate bounce buffers for BIOS
calls on stack where necessary.

This allows using memory above first megabyte for heap if necessary.

Use __FBSDID().
Also some minor copyright style cleanups.

Consistently use the BSD u_int and u_short instead of the SYSV uint and
ushort. In most of these files, there was a mixture of both styles and
this change just makes them self-consistent.

Requested by: bde (kern_ktrace.c)

use __packed.

Fix one of the va_arg() with less than int sized type probelms.

Cleanup warnings. Most of these are signed/unsigned warnings, as well as
some added const's.

$Id$ -> $FreeBSD$

Remove a debugging copy of offsetof() that snuck in.

PnP enumerator using the PCI BIOS. This is needlessly complex due to the
lack of a simple "enumerate all PCI devices" function.

PnP BIOS enumerator; mostly useful for hunting PnP devices that are supported
by the system BIOS rather than supporting ISA PnP.