MFC r334068 (phil):
Import libxo-0.9.0:
- Add xo_format_is_numeric() with improved logic to decide if format
strings are numeric, so json output quotes them
- Convert docs to sphinx/rst
- update tests

PR: 221676
Approved by: re (marius)
Sponsored by: The FreeBSD Foundation

Import libxo-0.8.4 from HEAD into stable/11

Submitted by: phil

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

Update libxo to 0.6.3

This fixes the 02 testcases on i386 (at least), and may fix the testcases
in general on 32-bit platforms

Differential Revision: https://reviews.freebsd.org/D7052
Approved by: phil (maintainer)
Approved by: re (gjb)
Reported by: asomers
Reviewed by: phil
Submitted by: phil
Sponsored by: EMC / Isilon Storage Division

Submitted by: phil
Reviewed by: sjg (mentor)
Approved by: sjg

Undo meaningless local changes to libxo so we're in sync with the github repo.

Submitted by: phil
Reviewed by: sjg (mentor)
Approved by: sjg

Import to 0.6.1
0.5.0:
document "trim" modifier
add xo_emit_field functions
Add xo_set_file{,_h} functions
Fix LIBXO_* variables; add -L and -I as needed
add --disable-silent-rules and an explicit make; s/PACKAGE-NAME/PACKAGE_NAME/; add /download/ to 'url'
fix silliness where xo_flush_h emitted closing tag (html); make the caller (xo_message) do it
flush after transitions; fix flush call in xo_do_emit
mkdir the version-specific packaging dir
use "XO_" instead of LIBXO_

0.6.0:
Add --with-retain-size to set the size (in bits) of the retain hash buckets
Add The Argument Modifier ({a:})
Add retain and no-retain to --libxo
autoconf: Add test for monitor.h
Document quote heuristic
go deep with nroff backslashes
Use "ULL" for 32 bit check
add xo_retain_clear and xo_retain_clear_all
docs: combine two 'handles' section; move command line argument section
handle GETTEXT when msgfmt isn't where it's supposed to be (FreeBSD)
make 'retain' a flag (XOEF_RETAIN) instead of a role; it's simpler, and doesn't feel as tacky. "{R:}" was painful to document, which means it's painful to use.
new xo_emit_f functions
nuke some unused UNUSEDs
test code: path must be static
update test cases

0.6.1:
fix version number (missed a commit during new-release)

Reviewed by: sjg
Approved by: sjg (mentor)

import libxo-0.4.7
Fix bug w/ {e:} in html, where no default encoding format was built
docs: "t" == "trim" (typo) (cf svn commit: r290445 - head/contrib/libxo/libxo)

Reviewed by: sjg
Approved by: sjg (mentor)

Merge libxo 0.4.6

Reviewed by: sjg
Approved by: sjg (mentor)

Bring down 0.4.5 vendor files and other catchups with the distribution tarball.

Reviewed by: phil

Move generated file from contrib to build directory.

Reviewed by: obrien
Approved by: sjg

Block the r296965 vendor/Juniper/libxo cleanup (to match the release tarball)
from being merged in -- backing out FreeBSD localizations.

Root out files that don't really belong here and could in fact screw
you over if you happen to use git for FreeBSD development, as it is
the case with the unbound/.gitignore, which lits files that are
actually required for the buildworld.

MFC after: 1 day

The field modifier for trimming whitespace
is not `q' but `t'.

Fix build for architectures that define wchar_t as an unsigned int.

Reported by: bz@

Upgrade libxo to 0.4.5.

Local changes incorporated by 0.4.5: r284340
Local changes retained: r276260, r282117

Obtained from: https://github.com/Juniper/libxo

Unbreak libxo's handling of characters not representable in current locale

The xo_format_string_direct function loops forever never advancing the
processed string pointer when it encounters a character that makes
mbrtowc fail. Make it emit '?' character instead, as it seems this is
what the code intent was, sans bugs.

Differential Revision: https://reviews.freebsd.org/D2802
Reviewed by: marcel

Fix build breakage with GCC.

Pointed out by: bz@

Upgrade libxo to 0.3.2.

Obtained from: https://github.com/Juniper/libxo/tree/0.3.2
Requested by: Phil Shafer <phil@juniper.net>

This import incorporates local change 279966.
Local change 276260 has been merged-in.

Mark xo_err(3), xo_errx(3), and xo_errc(3) as __dead2.

Differential Revision: https://reviews.freebsd.org/D2059
Reviewed by: marcel@
MFC after: 1 month
Sponsored by: The FreeBSD Foundation

Upgrade libxo to 0.2.0.

Obtained from: https://github.com/Juniper/libxo
Requested by: Phil Shafer <phil@juniper.net>

Revisions 276253 & 276273 were incorporated into 0.2.0.
Revision 276260 has been merged-in.

Output strerror from xo_warn

Reported by: bapt
Reviewed by: bapt, ngie

Differential Revision: https://reviews.freebsd.org/D1378

Escape Do to prevent mdoc(7) parser to get confused with the "Do" macro

Reported by: sjg

mdoc fixes

Upgrade libxo to 0.1.6.

Summary of changes:
1. Coverity defect fixes

Obtained from: https://github.com/Juniper/libxo/releases/tag/0.1.6

Upgrade libxo to 0.1.5

Obtained from: https://github.com/Juniper/libxo

Add generated headers xoversion.h and xoconfig.h. These are the result
of configuring the source tree:
% automake --add-missing
% autoconf
% ./configure

Import libxo 0.1.4

Obtained from: https://github.com/Juniper/libxo
Sponsored by: Juniper Networks, Inc.