Make some infiniband example utilities easily buildable:
- Add new Makefiles.
- Add more include directories when building.
- Fixed a printf() formatting string.

MFC after:	3 days
Sponsored by:	Mellanox Technologies
Remove spurious libelf dependency.

Submitted by:	pluknet
Fix a regression in pw usermod -G list

The user was perperly adding the to different groups from "list" but was not
removed from the other groups it could have belong to.
While here add a regression test about this bug

PR:		185666
Reported by:	sub.mesa@gmail.com
MFC after:	1 week
Add missing /usr/lib/debug directories

Directories for /usr/lib{,32}/{i18n,private} were missing from the mtree
file, which caused installworld to install the files that should be in
the directory as the name of the directory.
Do not delete the group wheel when bad argument is passed to pw groupdel -g

Check that the -g argument is actually a number, if not report an error.
This argument is converted without checking with atoi(3) later so without this
check it converts any alpha entries into 0 meaning it deletes the group wheel

Add a regression test about it

PR:		90114
Reported by:	bkoenig@cs.tu-berlin.de
MFC after:	1 week
Add fueword(9) and casueword(9) functions.  They are like fuword(9)
and casuword(9), but do not mix value read and indication of fault.

I know (or remember) enough assembly to handle x86 and powerpc.  For
arm, mips and sparc64, implement fueword() and casueword() as wrappers
around fuword() and casuword(), which means that the functions cannot
distinguish between -1 and fault.

On architectures where fueword() and casueword() are native, implement
fuword() and casuword() using fueword() and casuword(), to reduce
assembly code duplication.

Sponsored by:	The FreeBSD Foundation
Tested by:	pho
MFC after:	2 weeks (ia64 needs treating)
Replace some calls to fuword() by fueword() with proper error checking.

Sponsored by:	The FreeBSD Foundation
Tested by:	pho
MFC after:	3 weeks
Convert kern_umtx.c to use fueword() and casueword().

Also fix some mishandling of suword(9) errors as errno, which resulted
in spurious ERESTART.

Sponsored by:	The FreeBSD Foundation
Tested by:	pho
MFC after:	3 weeks
Fix atf syntax
Ensure pw userdel -u <invalid> do not try to remove root

Check the uid passed is actually a number as early as possible

MFC after:	1 week
Actually install casuword(9) to fix build.
Fix renaming a group via the gr_copy function

Add a regression test to pw(8) because the bug was discovered via using:
pw groupmod

PR:		187189
Reported by:	mcdouga9@egr.msu.edu
Tested by:	mcdouga9@egr.msu.edu
Patch by:	Marc de la Gueronniere
Document iSNS defaults.

MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
Import in latest mtree from NetBSD to fix a bug in parsing group files
that jmg fixed upstream.

MFC after:	1 week
Sponsored by:	DARPA, AFRL
Always request a completion for every work request for iWARP.  The
initial MPA exchange must be tracked this way so that t4_tom's state for
the tid is all clean at the time the tid transitions to RDMA mode.  Once
it does, t4_tom is out of the way and iw_cxgbe uses the qp endpoints
directly.

Sponsored by:	Chelsio Communications
Make the GPIO children attach to the first unit available and not only to
unit 0.

It seems that this 'simplification' was copied to all GPIO drivers in tree.

This fix a bug where a GPIO controller could fail to attach its children
(gpioc and gpiobus) if another GPIO driver attach first.
Rework virtual machine hypervisor detection.
- Move the existing code to x86/x86/identcpu.c since it is x86-specific.
- If the CPUID2_HV flag is set, assume a hypervisor is present and query
  the 0x40000000 leaf to determine the hypervisor vendor ID.  Export the
  vendor ID and the highest supported hypervisor CPUID leaf via
  hv_vendor[] and hv_high variables, respectively.  The hv_vendor[]
  array is also exported via the hw.hv_vendor sysctl.
- Merge the VMWare detection code from tsc.c into the new probe in
  identcpu.c.  Add a VM_GUEST_VMWARE to identify vmware and use that in
  the TSC code to identify VMWare.

Differential Revision:	https://reviews.freebsd.org/D1010
Reviewed by:	delphij, jkim, neel
Treat IFS separators in "$*" as quoted.

This makes a difference if IFS starts with *, ?, [ or a CTL* byte.
Filter out TESTS_SUBDIRS already added to SUBDIR instead of blindly
appending the TESTS_SUBDIRS variable to SUBDIR

Duplicate directory entries can cause unexpected side effects, like
installing the same files multiple times. This can be easily
reproduced via the following testcase prior to this commit:

  SUBDIR= dir
  TESTS_SUBDIRS+= dir

  .include <bsd.test.mk>

Sponsored by: EMC / Isilon Storage Division
Userspace library for Chelsio's Terminator 5 based iWARP RNICs (pretty
much every T5 card that does _not_ have "-SO" in its name is RDMA
capable).

This plugs into the OFED verbs framework and allows userspace RDMA
applications to work over T5 RNICs.  Tested with rping.

Obtained from:	Chelsio Communications
Relnotes:	Yes
Sponsored by:	Chelsio Communications