* doc/misc/reftex.texi (Builtin Label Environments): Mention the
floatflt LaTeX package instead of the obsolete floatfig.

* lisp/textmodes/reftex-vars.el (reftex-label-alist-builtin):
Replace obsolete floatfig entry with floatflt.  Add entry for
"floatingtable".
Fix type indicator for "tabwindow".
(reftex-default-label-alist-entries): Use floatflt as well.

* doc/misc/reftex.texi (Options - Creating Citations): Delete
unnecessary backslashes.

* doc/misc/reftex.texi (Installation): Add examples how to
activate RefTeX with use-package.
Fix markup.

* doc/emacs/mule.texi (Input Methods):
* doc/lispintro/emacs-lisp-intro.texi (Miscellaneous):
* doc/lispref/text.texi (Clickable Text):
* doc/misc/calc.texi (Defining Functions, Defining Simple Commands)
(Customizing Calc):
* doc/misc/efaq.texi (Matching parentheses, Modifying pull-down menus)
(Deleting menus and menu options, Binding keys to commands)
(Invalid prefix characters)
(Terminal setup code works after Emacs has begun)
(Backspace invokes help, Swapping keys, No Escape key)
(Binding combinations of modifiers and function keys)
(Replying to the sender of a message):
* doc/misc/eudc.texi (Installation, Emacs-only Configuration)
(External Configuration):
* doc/misc/gnus.texi (Group Parameters, Misc Group Stuff)
(Summary Buffer, Generic Marking Commands, RSS)
(nnmairix tips and tricks, Oort Gnus):
* doc/misc/ido.texi (Customization):
* doc/misc/mairix-el.texi (Using):
* doc/misc/mh-e.texi (HTML, Miscellaneous Commands and Options)
(Folders, Composing):
* doc/misc/octave-mode.texi (Running Octave from Within Emacs):
* doc/misc/reftex.texi (Citations Outside LaTeX):
* doc/misc/remember.texi (Quick Start):
* doc/misc/sem-user.texi (Smart Jump):
* doc/misc/viper.texi (Key Bindings, Vi Macros):
* doc/misc/widget.texi (Defining New Widgets):
* doc/misc/woman.texi (Word at point): Recommend 'keymap-set',
'keymap-global-set', 'keymap-global-unset', 'keymap-local-set', and
'key-translate', instead of their legacy equivalents.  (Bug#55647)

* doc/misc/reftex.texi (Builtin Label Environments):
* lisp/textmodes/reftex-vars.el (reftex-label-alist-builtin)
(reftex-default-label-alist-entries): Delete entries for the
supertabular environment.  supertabular is an extension of the
normal tabular environment, and therefore doesn't contain a
caption and label.  Hence, supporting supertabular in RefTeX is
useless.

* doc/misc/reftex.texi (Builtin Label Environments): Mention the
subfig LaTeX package instead of the obsolete subfigure.

* lisp/textmodes/reftex-vars.el (reftex-label-alist-builtin):
Replace obsolete subfigure entry with subfig.  Adjust the macro
names accordingly and the regexp for matching the context.
Unify the descriptions of all entries.
(reftex-default-label-alist-entries): Use subfig as well.

* doc/misc/reftex.texi: (Builtin Label Environments): Mention
supported LaTeX packages ctable, minted and listings.
(Reference Styles): Update the supported reference styles and the
corresponding macros.
(Citation Styles): Mention support for biblatex package.
(Language Support): Describe usage of non-ASCII characters in the
LaTeX \label definition.
(Style Files): Mention biblatex.el as well.
(Options - Defining Label Environments): Add entry for
`reftex-label-regexps' option.
Other minor improvements.

Run "TZ=UTC0 admin/update-copyright".