* admin/unidata/unidata-gen.el (unidata-file-alist): Update the
default values of 'bidi-class' according to the latest Unicode
Standard.
* admin/notes/unicode: Mention possible changes in
DerivedBidiClass.txt that need to be reflected in unidata-gen.el.
* lisp/international/characters.el (#xfb50, #xfdf0): Fix the
Arabic block characters. (Bug#55256)