1.  Add README.txt with upgrade instructions as well as license info
    and governance.
2.  Add FREEBSD-Xlist to prune the distribution.
3.  Remove files & directories not used by FreeBSD.
Merge branch 'master' into markj-develop
Import atf-0.17:

Experimental version released on February 14th, 2013.

* Added the atf_utils_cat_file, atf_utils_compare_file,
  atf_utils_copy_file, atf_utils_create_file, atf_utils_file_exists,
  atf_utils_fork, atf_utils_grep_file, atf_utils_grep_string,
  atf_utils_readline, atf_utils_redirect and atf_utils_wait utility
  functions to atf-c-api.  Documented the already-public
  atf_utils_free_charpp function.

* Added the cat_file, compare_file, copy_file, create_file, file_exists,
  fork, grep_collection, grep_file, grep_string, redirect and wait
  functions to the atf::utils namespace of atf-c++-api.  These are
  wrappers around the same functions added to the atf-c-api library.

* Added the ATF_CHECK_MATCH, ATF_CHECK_MATCH_MSG, ATF_REQUIRE_MATCH and
  ATF_REQUIRE_MATCH_MSG macros to atf-c to simplify the validation of a
  string against a regular expression.

* Miscellaneous fixes for manpage typos and compilation problems with
  clang.

* Added caching of the results of those configure tests that rely on
  executing a test program.  This should help crossbuild systems by
  providing a mechanism to pre-specify what the results should be.

* X-NetBSD-PR bin/45690: Make atf-report convert any non-printable
  characters to a plain-text representation (matching their
  corresponding hexadecimal entities) in XML output files.  This is to
  prevent the output of test cases from breaking xsltproc later.

Note that this import, compared to the one for 0.16, brings in all the
files that are part of the release.  This is to follow the Subversion
Primer guidelines, which mention that all files should be imported first
and only dropped when merging into contrib/atf/.

Approved by:	rpaulo (mentor)
Import atf-0.18:

Experimental version released on November 16th, 2013.

* Issue 45: Added require.memory support in atf-run for FreeBSD.

* Fixed an issue with the handling of cin with libc++.

* Issue 64: Fixed various mandoc formatting warnings.

* X-NetBSD-PR bin/48284: Made atf-check flush its progress message to
  stdout so that an interrupted test case always shows the last message
  being executed.

* X-NetBSD-PR bin/48285: Fixed atf_check examples in atf-sh-api(3).

Approved by:	rpaulo (mentor)
Merge branch 'markj-develop' of github.com:markjdb/freebsd into markj-develop
Move function name declaration to top of function (where it is closest to
the value it needs to be), s/fname/funcname/g, and move function name usage
to within printf format string.

MFC after:	3 days
Kick an unused orphan to the curb ;)
Improve debugging with f_eval_catch() introduced by SVN r257784 and also
fix a bug where "pkg update" was not getting the value of PACKAGESITE.
NB: PACKAGESITE needs to be explicitly exported in support of children.

MFC after:	3 days
Always shutdown the media when we're exiting the packages module (prevents
errors on re-entry for physical media). Also, while we're here, stop
ejecting the CDROM when we're done with it (but leave the functions for
later use so that we could perhaps -- from the installer standpoint -- use
it to eject the media after an install).

MFC after:	3 days
Fix package installation from physical media such as DVD.

Discussed with:	re (gjb)
MFC after:	3 days
Do not assume a value for #address-cells when parsing the OF translations
map. This allows the kernel to get farther with OpenBIOS on 64-bit CPUs.
Refactor draw-beastie function.

Discussed on:	-hackers
Add a try-include word (which acts the same as "include") and use it to
conditionally include (but ignore failures) /boot/loader.rc.local and
/boot/menu.rc.local -- to make customizing the menu easier.

Reviewed by:	alfred
Discussed on:	-hackers
Actually look up #address-cells instead of assuming it is correlated with
the Uninorth version number.

MFC after:	2 weeks
Use #address-cells and #size-cells here too instead of guessing. There is
some comment I wrote about these values "lying" in the negative diff, which
referes to an earlier misunderstanding about which node to read them from.
This gets at least the PPC64 kernel booting in the mac99 system model in
QEMU after bypassing the MacIO ATA driver, which apparently still has
problems.
Add more obsolete files
#interrupt-cells belongs to the iparent, not the device parent.
Add a sysctl to allow disabling resetting the OF syscons.

On some machines (G5 with lots of RAM), entering OF sometimes causes the
machine to hang.  Once the machine is booted, currently the only entry point
into OF is through resetting the framebuffer on mode switch on these machines.
Disabling this allows the machine to stay up at the expense of less usable
consoles after X is started.

MFC after:	Never, this is only a hack
Fix creating a vlan over lagg over mlxen crash.

PR:		181931
Submitted by:	Shahar Klein (shahark mellanox.com)
Fix siginfo_t.si_status for wait6/waitid/SIGCHLD.

Per POSIX, si_status should contain the value passed to exit() for
si_code==CLD_EXITED and the signal number for other si_code. This was
incorrect for CLD_EXITED and CLD_DUMPED.

This is still not fully POSIX-compliant (Austin group issue #594 says that
the full value passed to exit() shall be returned via si_status, not just
the low 8 bits) but is sufficient for a si_status-related test in libnih
(upstart, Debian/kFreeBSD).

PR:		kern/184002
Reported by:	Dmitrijs Ledkovs
Tested by:	Dmitrijs Ledkovs