Log Message:
grep: Update to 3.10

Changelog:
* Noteworthy changes in release 3.10 (2023-03-22) [stable]

** Bug fixes

  With -P, \d now matches only ASCII digits, regardless of PCRE
  options/modes. The changes in grep-3.9 to make \b and \w work
  properly had the undesirable side effect of making \d also match
  e.g., the Arabic digits: ٠١٢٣٤٥٦٧٨٩.  With grep-3.9, -P '\d+'
  would match that ten-digit (20-byte) string. Now, to match such
  a digit, you would use \p{Nd}. Similarly, \D is now mapped to [^0-9].
  [bug introduced in grep 3.9]

* Noteworthy changes in release 3.9 (2023-03-05) [stable]

** Bug fixes

  With -P, some non-ASCII UTF8 characters were not recognized as
  word-constituent due to our omission of the PCRE2_UCP flag. E.g.,
  given f(){ echo Perú|LC_ALL=en_US.UTF-8 grep -Po "$1"; } and
  this command, echo $(f 'r\w'):$(f '.\b'), before it would print ":r".
  After the fix, it prints the correct results: "rú:ú".

  When given multiple patterns the last of which has a back-reference,
  grep no longer sometimes mistakenly matches lines in some cases.
  [Bug#36148#13 introduced in grep 3.4]