Unicode 16.0.0 Support: Character encoding, character type info, and
transliteration tables are all updated to Unicode 16.0.0, using
the generator scripts contributed by Mike FABIAN (Red Hat).

Changes in CHARMAP and WIDTH:

    Total added characters in newly generated CHARMAP: 5185
    Total removed characters in newly generated WIDTH: 1
    Total added characters in newly generated WIDTH: 170

The removed character from WIDTH is U+1171E AHOM CONSONANT SIGN MEDIAL RA.
It changed like this:

UnicodeData.txt 15.1.0: 1171E;AHOM CONSONANT SIGN MEDIAL RA;Mn;0;NSM;;;;;N;;;;;
UnicodeData.txt 16.0.0: 1171E;AHOM CONSONANT SIGN MEDIAL RA;Mc;0;L;;;;;N;;;;;

EastAsianWidth.txt 15.1.0: 1171D..1171F   ; N  # Mn     [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
EastAsianWidth.txt 16.0.0: 1171E          ; N  # Mc         AHOM CONSONANT SIGN MEDIAL RA

I.e it changed from Mn (Mark Nonspacing) to Mc (Mark Spacing
combining). So it should now have width 1 instead of 0, therefore it
is OK that it was removed from WIDTH, characters not in WIDTH get
width 1 by default.

Nothing suspicious when browsing the list of the 170 added characters.

Changes in ctype:

    alpha: Added 4452 characters in new ctype which were not in old ctype
    combining: Added 51 characters in new ctype which were not in old ctype
    combining_level3: Added 43 characters in new ctype which were not in old ctype
    graph: Added 5185 characters in new ctype which were not in old ctype
    lower: Added 25 characters in new ctype which were not in old ctype
    print: Added 5185 characters in new ctype which were not in old ctype
    punct: Missing 33 characters of old ctype in new ctype
    punct: Added 766 characters in new ctype which were not in old ctype
    tolower: Added 27 characters in new ctype which were not in old ctype
    totitle: Added 27 characters in new ctype which were not in old ctype
    toupper: Added 27 characters in new ctype which were not in old ctype
    upper: Added 27 characters in new ctype which were not in old ctype

Nothing suspicous in the additions.

About the 33 characters removed from `punct`:

U+0363 - U+036F are identical in UnicodeData.txt. Difference in DerivedCoreProperties.txt:

DerivedCoreProperties.txt 15.1.0: not there.
DerivedCoreProperties.txt 16.0.0: 0363..036F    ; Alphabetic # Mn  [13] COMBINING LATIN SMALL LETTER A..COMBINING LATIN SMALL LETTER X

So that’s the reason why they are added to `alpha` and removed from `punct`.

Same for U+1DD3 - U+1DE6, they are identical in UnicodeData.txt but there is a difference in DerivedCoreProperties.txt:

DerivedCoreProperties.txt 15.1.0: 1DE7..1DF4    ; Alphabetic # Mn  [14] COMBINING LATIN SMALL LETTER ALPHA..COMBINING LATIN SMALL LETTER U WITH DIAERESIS
DerivedCoreProperties.txt 16.0.0: 1DD3..1DF4    ; Alphabetic # Mn  [34] COMBINING LATIN SMALL LETTER FLATTENED OPEN A ABOVE..COMBINING LATIN SMALL LETTER U WITH DIAERESIS

So they became `Alphabetic` and were thus added to `alpha` and removed from `punct`.

Resolves: BZ #32168

Reviewed-by: Carlos O'Donell <carlos@redhat.com>