Merge bmake-20130730
Main feature of interest is .MAKE.JOB.PREFIX=
to suppress --- job --- tokens.
Remove extra zeroing after M_ZERO allocation.
find: Allow -delete to delete files given as arguments.

Formerly, a command like find dir1/dir2 -delete would delete everything
under dir1/dir2 but not dir1/dir2 itself.

When -L is not specified and "." can be opened, the fts(3) code underlying
find(1) is careful to avoid following symlinks or being dropped in different
locations by moving the directory fts is currently traversing. If a
problematic concurrent modification is detected, fts will not enter the
directory or abort. Files found in the search are returned via the current
working directory and a pathname not containing a slash.

For paranoia, find(1) verifies this when -delete is used. However, it is too
paranoid about the root of the traversal. It is already assumed that the
initial pathname does not refer to directories or symlinks that might be
replaced by untrusted users; otherwise, the whole traversal would be unsafe.
Therefore, it is not necessary to do the check for fts_level ==
FTS_ROOTLEVEL.

Deleting the pathnames given as arguments can be prevented without error
messages using -mindepth 1 or by changing directory and passing "." as
argument to find. This works in the old as well as the new version of find.

Tested by:	Kurt Lidl
Reviewed by:	jhb
Add p_candebug() check to FILEMON_SET_PID ioctl.

Discussed with:	sjg
MFC after:	3 days
Fix previous commit (r253873).  "cong" has one bit per channel but the
congestion channel map has 1 nibble per channel.  So bits wxyz need to
be blown up into 000w000x000y000z.
Display temperature sensor data.  Shows -1 if sensor not
available on the card.

# sysctl dev.t4nex.0.temperature
# sysctl dev.t5nex.0.temperature
Import serf-1.3.0
Update serf 1.2.1 -> 1.3.0 for svn
Only receive the interrupts on the first core, to avoid duplicate interrupts.
Break out the iwn(4) device IDs into if_iwn_devid.h, as well as add
IDs for new devices.

* Add new device IDs
* Extend the ID probe code to include the newer range of bits used
  by later model devices

Tested:

* Intel 5100, STA mode

TODO:

* Test on Intel 4965, just to be sure

Submitted by:	Cedric GROSS <cg@gross.info>
Add in some definitions required for later iwn(4) device support.

This also clarifies a few existing fields.

Tested:

* Intel 5100

Submitted by:	Cedric GROSS <cg@gross.info>
- Implement iclear methods for QUICC and SAB 82532. With r253161 in place,
  this is is crucial at least for the latter.
  What happens is that attaching uart(4) to scc(4) causes the SAB 82532 to
  "receive" something and trigger a SER_INT_RXREADY interrupt, given that
  at least fast/filter interrupts are already enabled. Prior to r253161,
  uart_bus_ihand() was set up at this point and handled that condition,
  i. e. read the RX FIFO and issued a Receive Message Complete.
  Now, uart_bus_ihand() and uart_intr() are setup after attaching uart(4),
  leaving the SER_INT_RXREADY interrupt triggered during the latter to
  be handled by the iclear method. However, with that method not implement,
  this in turn causes SAB 82532 to not issue any further SER_INT_RXREADY
  interrupts until the RX FIFO is full again. Thus, 15 received bytes go
  to nowhere, given that "the other half" of the RX FIFO is used for status
  information. Hence, implementing sab82532_bfe_iclear() fixes things again.
  Potentially, the same problem exists for QUICC.
- Remove unnecessary __RMAN_RESOURCE_VISIBLE.
- Remove a superfluous header.
- Use KOBJMETHOD_END.
- Mark unused arguments as such.
- Remove variables unused after initialization.

Reviewed by:	marcel (earlier version)
- Use NULL instead of 0 for pointers.
- Remove unnecessary __RMAN_RESOURCE_VISIBLE.
Const'ify scc_driver_name.
Follow-up commit to fix CR0 issues. Maintain
architectural state on CR vmexits by guaranteeing
that EFER, CR0 and the VMCS entry controls are
all in sync when transitioning to IA-32e mode.

Submitted by:	Tycho Nightingale (tycho.nightingale <at> plurisbusnetworks.com)
Add a tunable for the default timeout.
Add missing depend.
Tweak the imx debug console code so that it works with multiple SoCs.

Instead of hard-coding the uart register addresses for the imx51, use
a variable that defaults to the imx51 address.  When debugging another
imx-family SoC, the variable can be set early in initarm() to provide
full console/printf support for debugging early boot.
Fix typo.
After r253839, which modifies ld's behaviour to not automatically pull
in needed libraries, change libc++.so into a linker script, so it can
automatically pull in libcxxrt.so.

MFC after:	1 week