a02b37fc08
Introduce unicode_version(), icu_unicode_version(), and unicode_assigned(). The latter requires introducing a new lookup table for the Unicode General Category, which is generated along with the other Unicode lookup tables. Discussion: https://postgr.es/m/CA+TgmoYzYR-yhU6k1XFCADeyj=Oyz2PkVsa3iKv+keM8wp-F_A@mail.gmail.com Reviewed-by: Peter Eisentraut