gnucash maint: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/ff2ceb11 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/9fc1ac6b (commit)
	 via  https://github.com/Gnucash/gnucash/commit/9bc44c62 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/c4a0fb46 (commit)
	from  https://github.com/Gnucash/gnucash/commit/15b8545e (commit)



commit ff2ceb111d08dd723fac430479b8aca0437cfa1b
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri Aug 20 09:27:16 2021 +0800

    [gnc-commodity] GValue must be unset

commit 9fc1ac6be17d67e3006ac2cdbb1bd34feceb93e9
Merge: 9bc44c62e c4a0fb468
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri Aug 20 17:02:19 2021 +0800

    Merge branch 'maint-guile-changes' into maint #1111

commit 9bc44c62e6d17b5a7e2c804e0503d2ea4fa7aec4
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri Aug 20 17:01:20 2021 +0800

    [engine.i] free GSList* key_path arg to qof_book_get_option
    
    Addendum to 6c8af6aab need to specify exact typemap target.

commit c4a0fb468b2a74b4e9f7a5a614fd607e0aae9cac
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Thu Aug 19 19:33:17 2021 +0800

    [srfi64-extras.scm] exit instead of return #t if no failures
    
    due to change in guile-3.0.7 to fix srfi64 bug



Summary of changes:
 bindings/engine.i                     | 2 +-
 bindings/guile/test/srfi64-extras.scm | 2 +-
 libgnucash/engine/gnc-commodity.c     | 8 +++++---
 3 files changed, 7 insertions(+), 5 deletions(-)