Description of changes

Judging by the patch comments, potentially down to my CPU being abit old.

Fixes the following on my powerpc64-linux system:

FAIL: pcre_jit_test
===================

Running JIT regression tests
  target CPU of SLJIT compiler: PowerPC 64bit (big endian + unaligned)
  in  8 bit mode with UTF-8  enabled and ucp enabled:
.........................................FAIL pcre_jit_test (exit status: 139)

FAIL: RunTest
=============


PCRE C library tests using test data from ./testdata
PCRE version 8.45 2021-06-15

---- Testing 8-bit library ----

Test 1: Main functionality (Compatible with Perl >= 5.10)
  OK
  OK with study
Segmentation fault
FAIL RunTest (exit status: 1)

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • powerpc64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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