* test/manual/cedet/cedet-utests.el (cedet-utest-elapsed-time):
Copy newer (circa-2011) implementation from elp.el, so that the
code matches its documentation again.

* admin/unidata/copyright.html:
* admin/unidata/UnicodeData.txt:
* admin/unidata/Blocks.txt:
* admin/unidata/BidiBrackets.txt:
* admin/unidata/BidiMirroring.txt:
* admin/unidata/IVD_Sequences.txt:
* admin/unidata/NormalizationTest.txt:
* admin/unidata/SpecialCasing.txt:
* test/manual/BidiCharacterTest.txt: Updated files from Unicode
14.0.

* lisp/international/fontset.el (script-representative-chars): Add
new scripts.
(otf-script-alist): Update from latest version.
(setup-default-fontset): Add new scripts.
* lisp/international/characters.el: Update syntax and category
tables for new characters and scripts.
(char-width-table): Update for changes in Unicode 14.0.
* lisp/international/mule-cmds.el (ucs-names): Update used and
unused ranges per Unicode 14.0.

* test/lisp/international/ucs-normalize-tests.el
(ucs-normalize-tests--failing-lines-part1)
(ucs-normalize-tests--failing-lines-part2): Update per the test
results.

* doc/lispref/nonascii.texi (Character Properties): Update Unicode
version number.

* etc/NEWS: Announce support for Unicode 14.0.

* admin/notes/unicode: Minor copyedits.

* lib-src/etags.c (mercury_pr): Remove redundant comment.

* test/manual/etags/merc-src/accumulator.m: Add more complex
declarations.
* test/manual/etags/ETAGS.good_1:
* test/manual/etags/ETAGS.good_2:
* test/manual/etags/ETAGS.good_3:
* test/manual/etags/ETAGS.good_4:
* test/manual/etags/ETAGS.good_5:
* test/manual/etags/ETAGS.good_6:
* test/manual/etags/CTAGS.good: Adapt to latest changes in 'etags'
and the test suite.  (Bug#47408)

According to
https://sass-lang.com/documentation/breaking-changes/slash-div, the
slash operator should be replaced by 'math.div'.

Fixed using the migration tool mentioned at
https://sass-lang.com/documentation/breaking-changes/slash-div#automatic-migration.

* test/manual/indent/scss-mode.scss: Remove slash operator.

The previous lack of support was due to incorrect calls to 'make_tag'
in 'mercury_pr', which caused 'pfnote' to refrain from adding Mercury
tags to the list of recorded tags.

* lib-src/etags.c (mercury_pr): Pass the correct NAME and NAMELEN
arguments to 'make_tag'.

* test/manual/etags/CTAGS.good: Adjust to the above change.

* test/manual/etags/ETAGS.good_1:
* test/manual/etags/ETAGS.good_2:
* test/manual/etags/ETAGS.good_3:
* test/manual/etags/ETAGS.good_4:
* test/manual/etags/ETAGS.good_5:
* test/manual/etags/ETAGS.good_6: Adapt to added Mercury support.

* lib-src/etags.c (find_entries, test_objc_is_mercury):
* etc/NEWS: Fix punctuation and typos in last change.

Tag declarations starting lines with ':-'.
By default, all declarations are tagged.  Optionally, first
predicate or functions in clauses can be tagged as in Prolog
support using '--declarations'.  (Bug#47408).
* lib-src/etags.c (test_objc_is_mercury, Mercury_functions)
(mercury_skip_comment,  mercury_decl, mercury_pr):
Implement Mercury support.  As Mercury and Objective-C have
the same file extension .m, a heuristic test tries to detect
the language.

* doc/man/etags.1: Document the change.  Add Mercury-specific
 behavior for '--declarations'.  This option tags first
predicates or functions in clauses in addition to declarations.

* test/manual/etags/README: New file.  (Bug#46055)

* test/README: Mention separate README files for tests in the
'manual' subdirectory