- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC r259792:
Remove references to SUP_UPDATE and CVS_UPDATE.
Include base svn when evaluating if svn(1) exists.

Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Fix typo introduced in r251084.

MFC after: 1 month
X-MFC-With: r251084

r245757 introduced warning output if update method is set to CVS_UPDATE
or SUP_UPDATE.

CVS exporter for head/ is turned off for nearly one month now.

It is finally time to swing the ax at these update methods.

Reviewed by: eadler
MFC after: 1 month

- Rename .sgml files to .xml to track the recent doc changes

MFC after: 1 day

Fix the order in which we build subdirectories in a "make all" from the
top-level release/doc directory. We were building in share/sgml first,
which caused us to autogenerate hardware notes entities in the wrong
format (we want to build these via ${RELNOTES_LANG}/hardware/Makefile,
in order to get the HWNOTES_MI variable).

Approved by: re (kensmith)

Hook up the Hardware Notes to the build again, now that the doc build
script has been updated.

Temporarily unhook the English Hardware Notes from the build to unbreak
the web build.

Pointy hat to: simon

Auto generate the device listings in the Hardware Notes based on
manual pages, to avoid duplicating work between the Hardware Notes and
manual pages.

Each text line in the output from the manual page parser is generated
as a SGML entity, making it possible for translators to only translate
lines which actually contains English text (this neat idea came from
hrs).

To determine which drivers are usable on which architectures the
dev.archlist.txt file is used to explicitly list this. It it an
imperfect solution, but the best I have been able to come up with for
now.

This commit converts most of the devices which has a section 4 manual
page with a HARDWARE section to be the new auto generated format.

Reviewed in principle by: ru, hrs, trhodes
Good ideas for improvements: hrs
No objections: -doc, re

ISO_* -> ISO* rename

Properly key RELNOTESng language selection from RELNOTES_LANG instead
of DOC_LANG.

Submitted by: Thomas Seck <tmseck@web.de>

Build system:
o Define a RELN_ROOT variable which points to the root of the relnotes
tree (i.e., src/release/doc).
o By default, define DOC_PREFIX in terms of RELN_ROOT; this gives a
bigger chance of finding the doc/ tree without help in the form of
setting DOC_PREFIX on the command line.
o Respect DOCDIR; `make install` works now.

Approved by: bmah

First commit of RELNOTESng, the rewrite of the *.TXT documentation
files.

src/release/doc/README has additional information.

Reviewed by: -current, -doc