gnucash stable: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/df9380c2 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/384043ac (commit)
	 via  https://github.com/Gnucash/gnucash/commit/0d21fdc9 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/96dac7bb (commit)
	from  https://github.com/Gnucash/gnucash/commit/bf1264b5 (commit)



commit df9380c2a80f92e8d0c003cb461e898489233d06
Merge: bf1264b561 384043ac41
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sun May 17 08:41:06 2026 +0800

    Merge branch 'ctre-regex' into stable

commit 384043ac41ab2f8e59ab746b5b87f503c7c74483
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sat May 16 18:27:12 2026 +0800

    [gnc-filepath-utils.cpp] use ctre instead of std::regex

commit 0d21fdc9f7815b878314e31970717d20cb5ee01f
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri May 15 17:22:53 2026 +0800

    [ctre.hpp] add single-header ctre v3.11.0

commit 96dac7bb38b88abd8321ea2f33b3bba100ef21e3
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sat May 16 18:27:08 2026 +0800

    [gnc-filepath-utils.cpp] null check char* arguments



Summary of changes:
 CMakeLists.txt                                     |    1 +
 borrowed/CMakeLists.txt                            |    2 +
 borrowed/ctre/CMakeLists.txt                       |   13 +
 borrowed/ctre/LICENSE                              |  218 +
 borrowed/ctre/ctre.hpp                             | 5993 ++++++++++++++++++++
 libgnucash/core-utils/CMakeLists.txt               |    1 +
 libgnucash/core-utils/gnc-filepath-utils.cpp       |   13 +-
 libgnucash/core-utils/test/CMakeLists.txt          |    1 +
 .../core-utils/test/gtest-path-utilities.cpp       |    2 +
 9 files changed, 6238 insertions(+), 6 deletions(-)
 create mode 100644 borrowed/ctre/CMakeLists.txt
 create mode 100644 borrowed/ctre/LICENSE
 create mode 100644 borrowed/ctre/ctre.hpp