Update branch to use.

Approved by:	re (implicit)
Change default version for manual pages to 7.2.

Approved by:	re (implicit)
Bump version from 7.1 to 7.2.

Approved by:	re (implicit)
Update CVS tag to RELENG_7_2.

Approved by:	re (implicit)
Almost ready for 7.2-RC1 builds.

Approved by:	re (implicit)
Bump __FreeBSD_version for 7.2-REL plus the shift to show this is a
release branch.

Approved by:	re (implicit)
Add package directory for 7.2-REL.  While here add the one for 6.4-REL.

Approved by:	re (implicit)
MFC r191081-191082:

Properly handle negative cache enries found through dotdot lookups.

Submitted by:	tegge
Approved by:	re(kib)

_M   sys
M    sys/kern/vfs_cache.c
_M   sys/dev/cxgb
_M   sys/dev/ath/ath_hal
_M   sys/contrib/pf
MFC r175055
  Defer setting either PG_CACHED or PG_FREE until after the free page
  queues lock is acquired.  Otherwise, the state of a reservation's
  pages' flags and its population count can be inconsistent.  That could
  result in a page being freed twice.

(This change should have been included in the MFC of the superpages
support.)

Thanks to:	pho for an illuminating crash

Approved by:	re (kib)
Merge r190708 from HEAD to releng/7.2:
Fix KBI breakage by r190520 which affects older linux.ko binaries:

1) Move the new field (brand_note) to the end of the Brandinfo structure.
2) Add a new flag BI_BRAND_NOTE that indicates that the brand_note pointer
   is valid.
3) Use the brand_note field if the flag BI_BRAND_NOTE is set and as old
   modules won't have the flag set, so the new field brand_note would be
   ignored.

Suggested by:   jhb
Reviewed by:    jhb

Approved by:	re (Ken Smith), kib (mentor)
MFC: Use a disk address instead of an int to hold the starting offset of an
open partition.

Approved by:	re (kib)
MFC r191218 and related backout r191220.

More fallout from negative dotdot caching. Negative entries should
be removed from and reinserted to proper ncneg list.

Reported by:	pho
Submitted by:	kib
Approved by:	re (kib)
MFC: r191072

Fix whitespace.

Approved by:	re (kib)
MFC: r191076

- Remove the second license as I'm also fine with the first one.
- Remove redundant softc members for RIDs.
- Change some softc members to be unsigned where more appropriate.
- Add some missing const.
- Remove support for mmap(2)'ing VGA I/O as it was broken [1] and
  not required by X.Org anyway.
- Fix some confusion between bus, physical and virtual addresses
  which mostly consisted in using members of struct video_adapter
  inappropriately but wasn't fatal except for the regular framebuffer
  mmap(2)'ing.
- Remove redundant bzero(9)'ing of the softc.
- Don't map the framebuffer twice in case the firmware has already
  mapped it as besides wasting resources this isn't possible with
  all MMUs. This is a bit tricky as a) just because the firmware
  provides a property with a virtual address doesn't mean it's
  actually mapped (but typically is when the framebuffer is the
  console) and b) the firmware doesn't necessarily map it with
  the same byteorder as we do. This makes machfb(4) work on machines
  with cheetah-class MMUs (including X.Org).

Reported by:	Michael Plass [1]
Approved by:	re (kib)
MFC of tzdata2009f

Correct DST information for Pakistan for 2009.

Approved by:	re (kip)
MFC r191164

Prevent atkbd(4) interrupt handler from calling keyboard callback function
when polled mode is enabled. This should help with duplicated/missing
characters problem at mountroot, geli, etc. prompts on multi CPU systems
while kbdmux(4) is enabled.

Tested by:	Tobias Grosser <grosser -at- fim -dot- uni-passau -dot- de>
Tested by:	Fabian Keil <freebsd-listen -at- fabiankeil -dot- de>
Approved by:	re (kib)
MFC r191232

Fix bug in event timeout handling

Submitted by:	mav
Approved by:	re (kib)
MFC: r191265
Add docs category.

Approved by:  re (kensmith)
MFH r191302: Fix a buffer overflow.

For reasons of stack alignment, it does not appear that this is exploitable
on any systems FreeBSD runs on, so this will not be getting a security
advisory.

Approved by:	re (kib)
MFC r191305:

 Back out r186308 (r191014 in stable/7):

 In case of AF_LINK, which the kernel still returns for an RTAX_GATEWAY
 as an empty sockaddr_dl in the classic tun<n> case:
 copying the address into the message payload, but not the RTA_GATEWAY
 flag results in rt_xaddrs() in the kernel tripping over that and parsing
 the next attribute set with a flag, i.e. RTA_NETMASK, with the gateway
 address, resulting in bogus route entry.

Approved by:  re (kensmith)