Make regexps smaller and faster by removing terms that are superfluous
by virtue of standing next to another term that matches more.  See
https://lists.gnu.org/archive/html/emacs-devel/2020-01/msg00949.html
for details.

* lisp/bs.el (bs--make-header-match-string):
* lisp/gnus/deuglify.el (gnus-outlook-repair-attribution-block):
* lisp/gnus/message.el (message-subject-trailing-was-ask-regexp)
(message-subject-trailing-was-regexp):
* lisp/informat.el (Info-validate):
* lisp/net/browse-url.el (browse-url-button-regexp):
* lisp/net/rcirc.el (rcirc-url-regexp):
* lisp/org/ob-core.el (org-babel-remove-result):
* lisp/org/ob-fortran.el (org-babel-fortran-ensure-main-wrap):
* lisp/org/org-capture.el (org-capture-set-target-location):
* lisp/org/org-table.el (org-table-expand-lhs-ranges):
* lisp/org/org.el (org-maybe-keyword-time-regexp, org-ts-regexp)
(org-ts-regexp-inactive, org-ts-regexp-both):
* lisp/play/gametree.el (gametree-hack-file-layout):
* lisp/progmodes/cc-mode.el (c-Java-defun-prompt-regexp):
* lisp/progmodes/idlw-shell.el (idlwave-shell-halting-error):
* lisp/progmodes/ruby-mode.el (ruby-mode-set-encoding):
* lisp/progmodes/verilog-mode.el (verilog-error-font-lock-keywords)
(verilog-verilint-off, verilog-case-indent-level)
(verilog-within-translate-off, verilog-start-translate-off)
(verilog-back-to-start-translate-off, verilog-end-translate-off)
(verilog-expand-dirnames):
* lisp/term.el (term-control-seq-regexp):
* lisp/textmodes/reftex-vars.el (featurep):
* lisp/url/url-gw.el (url-open-telnet):
* lisp/vc/ediff-ptch.el (ediff-context-diff-label-regexp):
* lisp/vc/pcvs-parse.el (cvs-parse-status):
* test/src/regex-emacs-tests.el (regex-tests-PCRE):
Remove subsumed repetitions.
* lisp/progmodes/sh-script.el (sh-syntax-propertize-function):
Simplify repetition of a repetition.

* lisp/align.el (align-load-hook):
* lisp/autorevert.el (auto-revert-load-hook):
* lisp/bookmark.el (bookmark-load-hook):
* lisp/cmuscheme.el (cmuscheme-load-hook):
* lisp/dired.el (dired-load-hook):
* lisp/expand.el (expand-load-hook):
* lisp/ibuffer.el (ibuffer-load-hook):
* lisp/msb.el (msb-after-load-hook):
* lisp/recentf.el (recentf-load-hook):
* lisp/speedbar.el (speedbar-load-hook):
* lisp/strokes.el (strokes-load-hook):
* lisp/calc/calc.el (calc-load-hook):
* lisp/calendar/timeclock.el (timeclock-load-hook):
* lisp/emulation/viper-init.el (viper-load-hook):
* lisp/progmodes/cwarn.el (cwarn-load-hook):
* lisp/progmodes/idlwave.el (idlwave-load-hook):
* lisp/progmodes/inf-lisp.el (inferior-lisp-load-hook):
* lisp/progmodes/meta-mode.el (meta-mode-load-hook):
* lisp/textmodes/reftex-vars.el (reftex-load-hook):
* lisp/textmodes/table.el (table-load-hook):
* lisp/url/url-vars.el (url-load-hook):
* lisp/vc/ediff-init.el (ediff-load-hook):
Obsolete for with-eval-after-load.

Run "TZ=UTC0 admin/update-copyright $(git ls-files)".

* lisp/textmodes/reftex-vars.el (reftex-ref-style-alist): Move
entry for \Ref from "Varioref" into "Default" as this macro is
part of LaTeX 2019-10-01 kernel.
Rearrange entries for "Varioref".

* lisp/textmodes/reftex-vars.el (reftex-cite-format-builtin):
citeasnoun can take an optional parameter (bug#31476).  Suggested
by Konrad Podczeck.

* lisp/textmodes/reftex-vars.el (reftex-label-regexps): Match
explicitly for key-val labels in optional arguments of
environments provided by "listings" and "breqn" packages and the
macro "\ctable" from the package of the same name.
Update docstring.

* lisp/textmodes/reftex-vars.el (reftex-label-regexps): Improve
regexp for key-val labels in order to skip over content in braces.

2fcf2df Fix copyright years by hand
26bed8b Update copyright year to 2019
2814292 Fix value of default frame height.  (Bug#33921)

Run 'TZ=UTC0 admin/update-copyright $(git ls-files)'.

* lisp/textmodes/reftex-vars.el (reftex-ref-style-alist): Add entry
for \eqref provided by amsmath.sty and bind it to "e" key.