MFC r346356:
Implement flag for telling cuse(3) clients if the peer is running in 32-bit
compat mode or not. This is useful when implementing compatibility ioctl(2)
handlers in userspace.

Sponsored by: Mellanox Technologies

MFC r324320:
Add support for new cuse(3) error code, CUSE_ERR_NO_DEVICE.
This error code is useful when emulating Linux input event
devices from userspace.

PR: 218626
Submitted by: jan.kokemueller@gmail.com
Sponsored by: Mellanox Technologies

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

libcuse: make more use of the howmany() macro when available.

We have a howmany() macro in the <sys/param.h> header that is
convenient to re-use as it makes things easier to read.

Merge the projects/release-pkg branch to head.

This allows packaging the base system with pkg(8), including
but not limited to providing the ability to provide upstream
binary update possibilities for non-tier-1 architectures.

This merge is a requirement of the 11.0-RELEASE, and as such,
thank you to everyone that has tested the project branch.

Documentation in build(7) etc. is still somewhat sparse, but
updates to those parts will follow.

Sponsored by: The FreeBSD Foundation

Make CUSE usable with platforms where the size of "unsigned long" is
different from the size of a pointer.

META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host.

This both avoids some dependencies on xinstall.host and allows
bootstrapping on older releases to work due to lack of at least 'install -l'
support.

Sponsored by: EMC / Isilon Storage Division

META_MODE: Remove DEP_RELDIR from Makefile.depend files.

This has not been needed since r284171 in projects/bmake.

Sponsored by: EMC / Isilon Storage Division

Add META_MODE support.

Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision: D2796
Reviewed by: brooks imp

Convert libraries to use LIBADD
While here reduce a bit overlinking

Fix compiler locking diagnostic warnings.

PR: 194289

Add lock annotations to libcuse.

- Add annotations to the lock/unlock function to indicate that the
function is allowed to lock and unlock the underlying pthread mutex.

- Add __guarded_by() annotations to the global variables.

Approved by: hselasky@

Add missing DPADD to Makefile.

PR: 192733

mdoc: remove superfluous paragraph macros.

Fix destruction of character devices by passing correct pointer to
kernel in IOCTL request.

Submitted by: Andrey Zholos <aaz@q-fu.com>

Mdoc cleanup, typo and grammar fixes.

Add missing MLINKs.

Initial import of character device in userspace support for FreeBSD.
The CUSE library is a wrapper for the devfs kernel functionality which
is exposed through /dev/cuse . In order to function the CUSE kernel
code must either be enabled in the kernel configuration file or loaded
separately as a module. Currently none of the committed items are
connected to the default builds, except for installing the needed
header files. The CUSE code will be connected to the default world and
kernel builds in a follow-up commit.

The CUSE module was written by Hans Petter Selasky, somewhat inspired
by similar functionality found in FUSE. The CUSE library can be used
for many purposes. Currently CUSE is used when running Linux kernel
drivers in user-space, which need to create a character device node to
communicate with its applications. CUSE has full support for almost
all devfs functionality found in the kernel:
- kevents
- read
- write
- ioctl
- poll
- open
- close
- mmap
- private per file handle data

Requested by several people. Also see "multimedia/cuse4bsd-kmod" in
ports.