* admin/notes/unicode:
* admin/unidata/README:
* admin/unidata/BidiBrackets.txt:
* admin/unidata/BidiMirroring.txt:
* admin/unidata/Blocks.txt:
* admin/unidata/IVD_Sequences.txt:
* admin/unidata/NormalizationTest.txt:
* admin/unidata/SpecialCasing.txt:
* admin/unidata/UnicodeData.txt:
* lisp/international/characters.el:
* lisp/international/fontset.el (script-representative-chars):
* lisp/international/mule-cmds.el (ucs-names): Update per Unicode 10.0.

Implement unconditional special casing rules defined in Unicode standard.

Among other things, they deal with cases when a single code point is
replaced by multiple ones because single character does not exist (e.g.
‘fi’ ligature turning into ‘FL’) or is not commonly used (e.g. ß turning
into SS).

* admin/unidata/SpecialCasing.txt: New data file pulled from Unicode
standard distribution.
* admin/unidata/README: Mention SpecialCasing.txt.

* admin/unidata/unidata-get.el (unidata-gen-table-special-casing,
unidata-gen-table-special-casing--do-load): New functions generating
‘special-uppercase’, ‘special-lowercase’ and ‘special-titlecase’
character Unicode properties built from the SpecialCasing.txt Unicode
data file.

* src/casefiddle.c (struct casing_str_buf): New structure for
representing short strings used to handle one-to-many character
mappings.

(case_character_imlp): New function which can handle one-to-many
character mappings.
(case_character, case_single_character): Wrappers for the above
functions.  The former may map one character to multiple (or no)
code points while the latter does what the former used to do (i.e.
handles one-to-one mappings only).

(do_casify_natnum, do_casify_unibyte_string,
do_casify_unibyte_region): Use case_single_character.
(do_casify_multibyte_string, do_casify_multibyte_region): Support new
features of case_character.
* (do_casify_region): Updated to reflact do_casify_multibyte_string
changes.

(casify_word): Handle situation when one character-length of a word
can change affecting where end of the word is.

(upcase, capitalize, upcase-initials): Update documentation to mention
limitations when working on characters.

* test/src/casefiddle-tests.el (casefiddle-tests-char-properties):
Add test cases for the newly introduced character properties.
(casefiddle-tests-casing): Update test cases which are now passing.

* test/lisp/char-fold-tests.el (char-fold--ascii-upcase,
char-fold--ascii-downcase): New functions which behave like old ‘upcase’
and ‘downcase’.
(char-fold--test-match-exactly): Use the new functions.  This is needed
because otherwise fi and similar characters are turned into their multi-
-character representation.

* doc/lispref/strings.texi: Describe issue with casing characters versus
strings.
* doc/lispref/nonascii.texi: Describe the new character properties.

Some tests are marked as expected to fail.

* test/lisp/international/ucs-normalize-tests.el: New tests.
* admin/unidata/NormalizationTest.txt: Add data for tests.
* admin/unidata/README: Add URL for NormalizationTest.txt.
* admin/notes/unicode: Add note about running (and updating the data
for) the new tests.  Remove note about normalization being unsupported.

* admin/unidata/Makefile.in (AWK): New, set by configure.
(all): Add charscript.el.
(blocks): New variable.
(charscript.el, ${unidir}/charscript.el): New targets.
(extraclean): Also remove generated charscript.el.

* admin/unidata/blocks.awk: New script.

* admin/unidata/Blocks.txt: New data file, from unicode.org.

* lisp/international/characters.el: Load charscript.

* src/Makefile.in (charscript): New variable.
(${charscript}): New target.
(${lispintdir}/characters.elc): Depend on charscript.elc.
(temacs$(EXEEXT)): Depend on charscript.

; * admin/unidata/README: Mention Blocks.txt.

; * .gitignore: Add lisp/international/charscript.el.

* admin/unidata/BidiMirroring.txt: Update to 7.0.0 (only comment changes).

* admin/unidata/UnicodeData.txt: Update to 7.0.0.

* admin/unidata/IVD_Sequences.txt: Update to 2014-05-16 version.

* admin/unidata/README: Update for above changes.

* admin/unidata/IVD_Sequences.txt: New file.
* admin/unidata/Makefile.in (${top_srcdir}/src/macuvs.h): New rule.
(all): Build it.
(extraclean): Remove it.
* admin/unidata/README: Mention BidiMirroring.txt and IVD_Sequences.txt.
* admin/unidata/copyright.html: Update to current version from Unicode
Consortium.
* admin/unidata/uvs.el: Rename from admin/mac/uvs.el.
(uvs-print-table-ivd): Output a header in the form that
unidata-gen.el generates.
* lisp/international/README: Refer to the Unicode Terms of Use rather
than copying it bodily here, as that simplifies maintenance.
* src/Makefile.in ($(srcdir)/macuvs.h): New rule.
* src/macuvs.h: Use automatically-generated header.

 admin/unidata/README:
 admin/unidata/copyright.html:
 admin/unidata/BidiMirroring.txt:
 admin/unidata/UnicodeData.txt: Update for the latest version 6.1 of
 the Unicode Standard.

 lisp/international/uni-bidi.el:
 lisp/international/uni-category.el:
 lisp/international/uni-combining.el:
 lisp/international/uni-decimal.el:
 lisp/international/uni-decomposition.el:
 lisp/international/uni-digit.el:
 lisp/international/uni-lowercase.el:
 lisp/international/uni-mirrored.el:
 lisp/international/uni-name.el:
 lisp/international/uni-numeric.el:
 lisp/international/uni-titlecase.el:
 lisp/international/uni-uppercase.el: Update for Unicode 6.1.