Log Message:
pcre2: update to 10.40.

Version 10.40 15-April-2022
---------------------------

This is mostly a bug-fixing and code-tidying release. However, there are some
extensions to Unicode property handling:

* Added support for Bidi_Class and a number of binary Unicode properties,
including Bidi_Control.

* A number of changes to script matching for \p and \P:

  (a) Script extensions for a character are now coded as a bitmap instead of
      a list of script numbers, which should be faster and does not need a
      loop.

  (b) Added the syntax \p{script:xxx} and \p{script_extensions:xxx} (synonyms
      sc and scx).

  (c) Changed \p{scriptname} from being the same as \p{sc:scriptname} to being
      the same as \p{scx:scriptname} because this change happened in Perl at
      release 5.26.

  (d) The standard Unicode 4-letter abbreviations for script names are now
      recognized.

  (e) In accordance with Unicode and Perl's "loose matching" rules, spaces,
      hyphens, and underscores are ignored in property names, which are then
      matched independent of case.