This incorporates:
2019-07-06 thread, lock, cond, tls: Remove support for Pth threads
2019-07-02 verify: document ‘assume’ better
2019-06-30 Include <stdlib.h> when needed
2019-06-30 inet_ntop, inet_pton: Avoid conflict with native Windows
* build-aux/config.sub, lib/faccessat.c, lib/fcntl.c, lib/fstatat.c:
* lib/readlinkat.c, lib/verify.h, m4/pthread_sigmask.m4:
* m4/sys_socket_h.m4: Copy from Gnulib.
* lib/gnulib.mk.in: Regenerate.

* admin/charsets/mapconv: Revert this [[:xdigit:]] change.
Solaris 10 ‘sed’ does not support [[:xdigit:]].

* lisp/help.el (view-echo-area-messages): Move the point to the
end of the *Messages* buffer even if it's already displayed
(bug#36343).

* lisp/uniquify.el: Remove outdated comment regarding some ancient
version of uniquify.el (bug#36384).

* lisp/bookmark.el (bookmark-alist-from-buffer): Improve error
message (bug#36391).

* doc/misc/gnus.texi (Foreign Groups): Update description of
gnus-read-ephemeral-emacs-bug-group for multiple bug
IDs (bug#11961).

* lisp/gnus/gnus-group.el (gnus-bug-group-download-format-alist):
Use HTTPS for Debian's bug tracker.
(gnus-group--read-bug-ids): New function for reading multiple bug
IDs in the minibuffer.  Improves on previous brittle approach of
word-at-point -> read-string -> string-to-number by a) defaulting to
the more accurate bug-reference-bug-regexp or number-at-point
without using the intrusive INITIAL-INPUT argument, and b) not
attempting to parse bug IDs.
(gnus-read-ephemeral-bug-group): Use it.  Extend docstring and
commentary.  Fix handling of multiple bug IDs as either numbers or
strings.  Hoist some string consing out of inner loop.  Delete
temporary file even on error.  Throw more informative error when
url-insert-file-contents successfully returns an error (bug#36433).
(gnus-read-ephemeral-debian-bug-group): Use gnus-group--read-bug-ids
and fix docstring for multiple bug IDs.  Accept optional WINDOW-CONF
like other ephemeral bug group commands.
(gnus-read-ephemeral-emacs-bug-group): Use gnus-group--read-bug-ids
and fix string/numeric ID conversions.  Try loading debbugs-gnu
before testing for debbugs-gnu-summary-mode (bug#36433).

* test/lisp/emacs-lisp/text-property-search-tests.el
(with-match-test): New macro.
(text-property-search-forward-prop-match-match-face-nil-nil)
(text-property-search-forward-prop-match-match-face-bold-t)
(text-property-search-forward-prop-match-match-face-bold-nil)
(text-property-search-backward-prop-match-match-face-nil-nil)
(text-property-search-backward-prop-match-match-face-italic-t)
(text-property-search-backward-prop-match-match-face-italic-nil):
Add test cases to also verify the value of prop-match-value
(bug#36486).

* lisp/doc-view.el (doc-view-ghostscript-program): Make the
default value dependent on the underlying OS.  (Bug#36357)

* lisp/progmodes/gud.el (gud-pdb-marker-regexp): Use "[:graph:]" to
match file name in prompt.  (Bug#34489)

(Bug#36460)

* lisp/bookmark.el (bookmark-upgrade-file-format-from-0)
(bookmark-bmenu-execute-deletions): Use progress-reporter.
(Bug#36462)

* admin/charsets/mapconv:
* build-aux/gitlog-to-changelog (parse_amend_file, git_dir_option):
* lisp/progmodes/verilog-mode.el (verilog-delay-re):
(verilog-type-font-keywords, verilog-read-always-signals-recurse):
(verilog-is-number):
* lisp/progmodes/vera-mode.el (vera-font-lock-keywords):
* test/src/emacs-module-tests.el (mod-test-sum-test):
* lisp/xml.el: (xml--entity-replacement-text):
* lisp/version.el (emacs-repository-version-git):
* lisp/textmodes/sgml-mode.el (sgml-quote):
* lisp/textmodes/css-mode.el (css-escapes-re)
(css--colors-regexp):
* lisp/progmodes/prolog.el (prolog-syntax-propertize-function):
* lisp/progmodes/hideif.el (hif-token-regexp, hif-tokenize):
* lisp/progmodes/ebnf-dtd.el: (ebnf-dtd-attlistdecl)
(ebnf-dtd-entitydecl, ebnf-dtd-lex):
* lisp/progmodes/ebnf-ebx.el (ebnf-ebx-hex-character):
* lisp/progmodes/ebnf-abn.el (ebnf-abn-character):
* lisp/progmodes/cperl-mode.el (cperl-highlight-charclass)
(cperl-find-pods-heres):
* lisp/progmodes/cc-mode.el (c-maybe-quoted-number-head)
(c-maybe-quoted-number, c-parse-quotes-before-change)
(c-parse-quotes-after-change, c-quoted-number-head-before-point)
(c-quoted-number-straddling-point):
* lisp/progmodes/ada-mode.el (featurep, ada-in-numeric-literal-p)
(ada-font-lock-keywords):
* lisp/org/org-mobile.el (org-mobile-copy-agenda-files)
* lisp/org/org-table.el (org-table-number-regexp):
(org-mobile-update-checksum-for-capture-file):
* lisp/nxml/xsd-regexp.el (xsdre-gen-categories):
* lisp/nxml/xmltok.el (let*):
* lisp/nxml/rng-xsd.el (rng-xsd-convert-hex-binary)
(rng-xsd-convert-any-uri):
* lisp/nxml/rng-uri.el (rng-uri-file-name-1)
(rng-uri-unescape-multibyte, rng-uri-unescape-unibyte)
(rng-uri-unescape-unibyte-match)
(rng-uri-unescape-unibyte-replace):
* lisp/nxml/rng-cmpct.el (rng-c-process-escapes):
* lisp/nxml/nxml-maint.el (nxml-insert-target-repertoire-glyph-set):
* lisp/net/shr-color.el (shr-color->hexadecimal):
* lisp/mail/rfc2231.el (rfc2231-decode-encoded-string):
* lisp/international/mule-cmds.el (read-char-by-name):
* lisp/htmlfontify.el (hfy-hex-regex):
* lisp/gnus/nneething.el (nneething-decode-file-name):
* lisp/gnus/mml-sec.el (mml-secure-find-usable-keys):
* lisp/gnus/gnus-art.el (gnus-button-mid-or-mail-heuristic-alist):
* lisp/faces.el (read-color):
* lisp/epg.el (epg--status-ERRSIG, epg--status-VALIDSIG)
(epg--status-SIG_CREATED, epg--decode-percent-escape)
(epg--decode-hexstring, epg--decode-quotedstring)
(epg-dn-from-string):
* lisp/emulation/cua-rect.el (cua-incr-rectangle):
* lisp/dnd.el (dnd-unescape-uri):
* lisp/cedet/semantic/lex.el (semantic-lex-number-expression):
* lisp/cedet/semantic/java.el (semantic-java-number-regexp):
* lisp/calc/calc-lang.el (pascal):
* lisp/calc/calc-ext.el (math-read-number-fancy):
* lisp/calc/calc-aent.el (math-read-token):
Replace various combinations of [0-9a-fA-F] with [[:xdigit:]].
(Bug#36167)

* src/ftfont.c [!HAVE_LIBOTF && HAVE_HARFBUZZ]: Include hb-ot.h.
(OTF, OTF_tag) [!HAVE_LIBOTF && HAVE_HARFBUZZ]: New typedefs.
(hbotf_open, hbotf_check_features) [!HAVE_LIBOTF && HAVE_HARFBUZZ]: New
functions.
(OTF_open, OTF_close, OTF_check_features) [!HAVE_LIBOTF && HAVE_HARFBUZZ]:
New macros.
(ftfont_list) [!HAVE_LIBOTF && HAVE_HARFBUZZ]: Use them.

* src/macfont.m (macfont_supports_charset_and_languages_p)
(macfont_has_char): Don't pass integers outside the Unicode codespace to
CFCharacterSetIsLongCharacterMember.

* lisp/term/tty-colors.el (tty-color-canonicalize):
Replace string-match with string-match-p.

Thanks to Jayden Navarro <jayden@yugabyte.com> and Alan Mackenzie <acm@muc.de>

(minibuffer-message): Use it to propertize message unless already
propertized by the caller.

* lisp/simple.el (minibuffer-error-function): Propertize the error.

* lisp/isearch.el (isearch-message-properties): New variable.
(isearch--momentary-message, isearch-message-prefix)
(isearch-message-suffix): Use it.  (Bug#21112)

* test/lisp/char-fold-tests.el (char-fold--test-multi-lax): New test.

Use a more precise test to determine whether the input to `regexp-opt'
is safe to optimise when KEEP-ORDER is non-nil, permitting more inputs
to be optimised than before.  For example, ("good" "goal" "go") is now
accepted.

* lisp/emacs-lisp/regexp-opt.el (regexp-opt):
More precise test for whether the list is safe w.r.t. KEEP-ORDER.
(regexp-opt--contains-prefix): Remove.

* test/lisp/emacs-lisp/regexp-opt-tests.el: Use lexical-binding.
(regexp-opt-test--permutation, regexp-opt-test--factorial)
(regexp-opt-test--permutations, regexp-opt-test--match-all)
(regexp-opt-test--check-perm, regexp-opt-test--explain-perm)
(regexp-opt-keep-order): Test KEEP-ORDER.

* lisp/gnus/mml.el (mml-parse-1): Respect any Content-Type
inserted by the user instead of insisting on text/plain.

Also fix two faulty regexps, save-match-data, and check c-major-mode-is
'c++-mode where needed.

* lis/progmodes/cc-langs.el (c-last-c-comment-end-on-line-re)
(c-last-open-c-comment-start-on-line-re): Handle repeated *s in regexp
correctly.

* lisp/progmodes/cc-engine.el (c-beginning-of-macro, c-end-of-macro): Protect
the match-data with save-match-data around regexp operations.
(c-end-of-macro): In the loop handling multiline block comments, check a
comment actually is multiline.

* lisp/progmodes/cc-mode.el (c-depropertize-CPP): Only call
c-depropertize-raw-strings-in-region in C++ Mode.

Diagnostics are supported by overlays, and they can legitimately move
around.  So flymake-diagnostic-beg and flymake-diagnostic-end must
look up the overlay positions, not the immutable slots of the
flymake--diag structure, which become stale.

* lisp/progmodes/flymake.el (version): Bump to 1.0.8.
(flymake-diagnostic-beg, flymake-diagnostic-end): Use diag's
overlay.
(flymake-show-diagnostic): Use flymake-diagnostic-end,
flymake-diagnostic-beg.

We're supposed to delete intersecting diagnostics in that situation,
but the intersection logic was way off.

* lisp/progmodes/flymake.el (version): Bump to 1.0.7.
(flymake--intersects-p): New helper.
(flymake--handle-report): Fix handling of :region.

* lisp/gnus/gnus-start.el (gnus-group-change-level): PREVIOUS needs to
  still be a string when the dribble entry is written, so don't
  convert it to an entry until after that's done. Also, we're not
  meant to write PREVIOUS itself, we're meant to write the group that
  comes _after_ it in the sort-order of gnus-group-list, so do that
  instead.

* test/lisp/bookmark-resources/example.txt:
* test/lisp/bookmark-resources/test.bmk:
* test/lisp/bookmark-tests.el: New files.
* lisp/bookmark.el: Minor cleanups.
(bookmark-insert-annotation): Signal error on invalid bookmark.
(bookmark-write-file): Add newline at end of file.

* src/image.c (compute_image_rotation): Fix the validity test
for :rotation values.  This avoids logging error messages when
no :rotation was provided in the image spec.

* src/xdisp.c (expose_window, expose_frame): Avoid compilation
warnings about printing unsigned values with %d.

* test/lisp/progmodes/flymake-tests.el (different-diagnostic-types):
Test is now passing on emba.gnu.org, too.

This simplifies callers and catches trace printf format errors
even with typical (non-debugging) compiles.
* src/dispextern.h (TRACE) [GLYPH_DEBUG]:
Move definitions to xdisp.c if it’s used only there.
* src/xdisp.c (redisplay_trace): New function, replacing TRACE macro.
(move_trace): New function, replacing TRACE_MOVE macro.
All uses changed.
(dump_glyph): When tracing, don’t use %d to format ptrdiff_t,
or %x to format a pointer.
(expose_frame): Redo trace printfs to avoid interleaved output
on GNU/Linux.

* test/lisp/progmodes/flymake-tests.el (different-diagnostic-types):
Test is now passing on hydra.nixos.org, since today.

* src/fileio.c (decide_coding_unwind): Delete function.
(Finsert_file_contents): Don't let invalid multibyte byte sequences
escape when we exit non-locally.

* test/src/fileio-tests.el (fileio-tests--insert-file-interrupt): New test.

Problem caught by gcc -DDEBUG_TRACE_MOVE -Wformat.
* src/xdisp.c (move_it_in_display_line_to, move_it_to)
(move_it_vertically) [DEBUG_TRACE_MOVE]: Fix printf format typos.

(insert_from_gap): Use it.
* src/lisp.h (insert_from_gap_1): Declare it.
* src/json.c (Fjson_insert):
* src/fileio.c (Finsert_file_contents): Use it.

* src/json.c (Fjson_insert):
* src/fileio.c (Finsert_file_contents):
* src/coding.h (decode_coding_gap): Adjust accordingly.

* lisp/gnus/gnus-cus.el (gnus-extra-group-parameters): Add more
group parameters used by nnimap.