document _JAIL as a possible option to set a cpuset for a jail..

MFC after:	3 days
Make sure that the flowtable flowid is only set to m_flowid if there
isn't one already supplied.

The previous flowtable code also did this.

Reviewed by:	glebius
Sponsored by:	Netflix, Inc.
complete svn 261909 - new netmap version.
since i updated the manpage i might as well commit it.

MFC after:	3 days
Switch the hardcoded default hash function from MD5 / DES to SHA512.
In sys/fs/nandfs/nandfs_vfsops.c, #if 0 an unused static function.

MFC after:	3 days
Under sys/netpfil/ipfw, surround two IPv6-specific static functions with
#ifdef INET6, since they are unused when INET6 is disabled.

MFC after:	3 days
In sys/dev/xen/console/console.c, #if 0 an unused static function.

MFC after:	3 days
Always clear L1 PTE descriptor when removing superpage on ARM

Invalidate L1 PTE regardles of existance of the corresponding
l2_bucket. This is relevant when superpage is entered via
pmap_enter_object() and will fix crash on entering page
in place of not properly removed superpage.
Ensure proper TLB invalidation on superpage promotion and demotion on ARM

Base pages within newly created superpage need to be invalidated so that
new mapping is "visible" immediately after creation.
Fix superpage promotion on ARM with respect to RO/RW and wired attributes

It was possible to create RW superpage mapping even if
the base pages were RO due to wrong setting of the prot
flag passed to pmap_map_section().
Promotion attempt should be canceled in case of attributes
mismatch between any two base pages. Since we still use
pv_flags to maintain permission to write (PVF_WRITE) and
wired status (PVF_WIRED) for a page, it is also necessary
to take those variables into account.
Avoid redundant superpage promotion attempts on ARM

Because pmap_enter_locked() is called from few different functions
some redundancy in superpage promotion attempts can be observed.
Hence, avoid promotion in pmap_enter_object() (if the object can
be mapped by superpage it will be handled by pmap_enter_object()
itself) and also do not waste time in pmap_enter_quick().
From now on the promotion will be performed only in pmap_enter().
Remove spurious assertion from pmap_extract_locked() on ARM

The condition under assertion is no longer valid since
superpages support is operating on section mappings.
Handle pmap_enter() on already promoted mappings for ARMv6/v7

Attempt to demote the superpage if trying to pmap_enter() on
one. Panic only when the particular superpage should
no longer exist for that pmap and address.
Allow overriding rctl.conf(5) file location for /etc/rc.d/rctl

Reviewed by:	trasz
Approved by:	bapt (mentor)
MFC after:      1 week
Add forgotten rc.conf(5) update with r261931

Reviewed by:	trasz
Approved by:	bapt (mentor)
MFC after:	1 week
Rework rctl(8) manpage

- Note that kernel options are required
- Shift parameters around in SYNOPSIS to make it more clear that there are
  different modes
- For all literal symbols such as 'process' or 'loginclass' or 'wallclock',
  etc, make them into bold symbols with .Sy
- For each subject:subject-id:etc: use .Em to underline to make it more clear
  they relate to the rule syntax
- Document how devd(8) support works
- Move RSS warning to BUGS and replace RSS with 'memoryuse' since 'RSS' is not
  defined in the manpage
- Add more examples around listing existing rules
- Make rule syntax into a list to improve readability
- Add a list of subjects and their corresponding subject-id same as
  RESOURCES/ACTIONS have lists
- Note that rctl(8) takes affect on all current and future processes
- Note that amount can take human numbers
- Add reference to login.conf(5) in few places login class is mentioned

Reviewed by:	trasz
Approved by:	bapt (mentor)
MFC after:	1 week
Better build fix.
Add a driver to provide access to imx6 on-chip one-time-programmble data.

Submitted by:	Steven Lawrance <stl@koffein.net>
Convert the "R1B fix" from a busy-loop in the interrupt handler to a callout.
Increase the wait time for acquiring the bus from 10 to 250ms.

Normally it never needs to wait here at all; waiting is done at the end
of the prior command.  When doing a crash dump, the normal interrupt
mechanism isn't used; instead the interrupt handler is called repeatedly
in a polling-like manner.  This can subvert hardware-specific drivers
and lead to trying to start a new command while the previous command is
still busy on the bus.  Since the SD spec says the longest a card can
take to execute any command is 250ms, use that as a timeout.