- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

Provide the structures and ioctl number definition for handling
PCIOCGETCONF compat32.

Submitted by: John Wehle <john feith com>
MFC after: 2 weeks

Implement compat32 MEMRANGE_GET and MEMRANGE_SET. This is needed to
run 32bit Xorg server with VESA driver.

Submitted by: John Wehle <john feith com>
MFC after: 1 week

Emulate the FIODGNAME ioctl in our 32-bit emulator.

It's quite strange that nobody reported this issue before. It turns out
functions like ttyname(), ptsname() and fdevname() don't work in
compat32. This means it't not even possible to run applications like
script(1) inside a 32-bit FreeBSD jail.

Fix this by converting 32-bit fiodgname_arg structures to their 64-bit
equivalent.

Reported by: kris
Tested by: kris

Add freebsd32 compat shims for ioctl(2)
CDIOREADTOCHEADER and CDIOREADTOCENTRYS requests.

Add freebsd32 compat shims for ioctl(2)
MDIOCATTACH, MDIOCDETACH, MDIOCQUERY, and MDIOCLIST requests.