Update to Unicode 17.0.0

Update to Unicode 17.0.0

The following patch updates GCC from Unicode 16.0.0 to 17.0.0.

I've followed what the README says and updated also one script from
glibc, but that needed another Unicode file - HangulSyllableType.txt -
around as well, so I'm adding it.
I've added one new test to named-universal-char-escape-1.c for
randomly chosen character from new CJK block.
Note, Unicode 17.0.0 authors forgot to adjust the 4-8 table, I've filed
bugreports about that but the UnicodeData.txt changes for the range ends
and the new range seems to match e.g. what is in the glyph tables, so
the patch follows UnicodeData.txt and not 4-8 table here.

Another thing was that makeuname2c.cc didn't handle correctly when
the size of the generated string table modulo 77 was 76 or 77, in which
case it forgot to emit a semicolon after the string literal and so failed
to compile.

And as can be seen in the emoji-data.txt diff, some properties like
Extended_Pictographic have been removed from certain characters, e.g.
from the Mahjong cards characters except U+1F004, and one libstdc++
test was testing that property exactly on U+1F000.  Dunno why that was
changed, but U+1F004 is the only colored one among tons of black and white
ones.

2025-10-08  Jakub Jelinek  <jakub@redhat.com>

contrib/
	* unicode/README: Add HangulSyllableType.txt file to the
	list as newest utf8_gen.py from glibc now needs it.  Adjust
	git commit hash and change unicode 16 version to 17.
	* unicode/from_glibc/utf8_gen.py: Updated from glibc.
	* unicode/DerivedCoreProperties.txt: Updated from Unicode 17.0.0.
	* unicode/emoji-data.txt: Likewise.
	* unicode/PropList.txt: Likewise.
	* unicode/GraphemeBreakProperty.txt: Likewise.
	* unicode/DerivedNormalizationProps.txt: Likewise.
	* unicode/NameAliases.txt: Likewise.
	* unicode/UnicodeData.txt: Likewise.
	* unicode/EastAsianWidth.txt: Likewise.
	* unicode/DerivedGeneralCategory.txt: Likewise.
	* unicode/HangulSyllableType.txt: New file.
gcc/testsuite/
	* c-c++-common/cpp/named-universal-char-escape-1.c: Add test for
	\N{CJK UNIFIED IDEOGRAPH-3340E}.
libcpp/
	* makeucnid.cc (write_copyright): Adjust copyright year.
	* makeuname2c.cc (generated_ranges): Adjust end points for a couple
	of ranges based on UnicodeData.txt Last changes and add a whole new
	CJK UNIFIED IDEOGRAPH- entry.  None of these changes are in the 4-8
	table, but clearly it has just been forgotten.
	(write_copyright): Adjust copyright year.
	(write_dict): Fix up condition when to print semicolon.
	* generated_cpp_wcwidth.h: Regenerate.
	* ucnid.h: Regenerate.
	* uname2c.h: Regenerate.
libstdc++-v3/
	* include/bits/unicode-data.h: Regenerate.
	* testsuite/ext/unicode/properties.cc: Test __is_extended_pictographic
	on U+1F004 rather than U+1F000.