gnucash stable: Multiple changes pushed

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/78b1bd24 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/04074667 (commit)
	from  https://github.com/Gnucash/gnucash/commit/2f535782 (commit)



commit 78b1bd24caac16481e8ecc06229b195974c18d5e
Merge: 2f53578246 0407466789
Author: John Ralls <jralls at ceridwen.us>
Date:   Thu May 15 15:52:09 2025 -0700

    Merge Bill Summerfeld's 'extensions' into stable.

commit 04074667898e4a3fa8f469d50e77987fea58a8c7
Author: Bill Sommerfeld <sommerfeld at hamachi.org>
Date:   Mon May 5 15:58:23 2025 -0700

    Drop the definition of __EXTENSIONS__ from three files and instead
    move it to compiler options if on a platform that needs it.



Summary of changes:
 CMakeLists.txt                                  | 8 +++++++-
 common/config.h.cmake.in                        | 5 -----
 libgnucash/backend/xml/sixtp-dom-generators.cpp | 3 ---
 libgnucash/backend/xml/sixtp-utils.cpp          | 1 -
 libgnucash/engine/gnc-date.cpp                  | 1 -
 5 files changed, 7 insertions(+), 11 deletions(-)