Import libucl 0.4.0
Import libucl version 2014-05-14 (almost 0.4.1)
This bring ucl_lookup_path (xpath like for ucl objects)
Improve support for Intel Lynx Point USB 3.0 controllers by using the
USB 2.0 port mask in addition to the USB 3.0 port mask. The hardware
does not always accept when writing -1U to the port switching
registers.

MFC after:	3 days
Tested by:	Huang Wen Hui <huanghwh@gmail.com>
New BSDL timeout(1) utility compatible with GNU timeout

it fully passes the GNU timeout regression tests, it is written in a mostly
portable way (only signal parsing is relying on non portable structures)

Phabric:	D377
Fix indentation
Fix build with gcc
Style(9) fix
Fix typo
Sort headers
Constify long options
Remove useless call to sigemptyset
properly check errno when waiting for a process status when a SIGCHLD is received
White space fixes
Sort properly the headers
While here space/tabs cleanup

Reviewed by:	kib
Check for the cross-device cross-link attempt in the VFS, instead of
forcing filesystem VOP_LINK() methods to repeat the code.  In
tmpfs_link(), remove redundand check for the type of the source,
already done by VFS.

Note that NFS server already performs this check before calling
VOP_LINK().

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Remove unused header.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Do not ignore error from tmpfs_alloc_vp().  It results in access to
the random memory.

Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Add support for VMWare dialect of EXTENDED COPY command, aka VAAI Clone.

This allows to clone VMs and move them between LUNs inside one storage
host without generating extra network traffic to the initiator and back,
and without being limited by network bandwidth.

LUNs participating in copy operation should have UNIQUE NAA or EUI IDs set.
For LUNs without these IDs VMWare will use traditional copy operations.

Beware: the above LUN IDs explicitly set to values non-unique from the VM
cluster point of view may cause data corruption if wrong LUN is addressed!

MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.
libpythagoras needs libm.

This fixes "make tinderbox" failures on various architectures when
WITH_TESTS=yes is enabled.  Problem introduced in r267679.
Allow console drivers active from early boot to be used with xf86-video-scfb,
rather than only drivers attached later on. This involves a small amount of
code duplication with dev/fb/fbd.c, which will fixed later on.

Also improve performance of vt_blank() by making it not read from the
framebuffer unnecessarily.
Allow efifb to be used with xf86-video-scfb. This is important for EFI
systems without either a CSM or real graphics drivers, such as my Lenovo
Haswell laptop.

This provides working X with the small complication of a console cursor
permanently overlaid on the upper-left corner of the screen that will be
dealt with later.

Also remove some redundant screen clearing.
Revert previous revision (r268461) for reasons documented in PR.
To use tmux in an rc.d script, use the new-session flag "-d".
To use screen in an rc.d script, use the "-dm" flag.
If you really need to launch an attached session, manually
export TERM=xterm (FreeBSD 9.0 or higher) or export TERM=cons25
for older releases.

Reported by:	bdrewery
Discussed on:	src-committers, svn-src-all, svn-src-head
PR:		bin/191869
After r261991, clang warnings about unused functions in the kernel were
completely silenced.  Make sure these warnings appear again, so there is
some incentive to fix them, but do not error out the whole kernel build
for them.

Noticed by:	steven@pyro.eu.org
PR:		191867
MFC after:	3 days