gnucash maint: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/f0970c8e (commit)
	 via  https://github.com/Gnucash/gnucash/commit/31a0300a (commit)
	 via  https://github.com/Gnucash/gnucash/commit/6bcd6902 (commit)
	from  https://github.com/Gnucash/gnucash/commit/a3fedfe5 (commit)



commit f0970c8eb4c1a711aa58738096353ba22e629308
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Tue Oct 19 22:54:00 2021 +0800

    [gnc-features] don't repeatedly g_strconcat gchars*

commit 31a0300abe9baa6c145a668fe058ec45264477e6
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Tue Oct 19 19:15:35 2021 +0800

    [Recurrence.c] avoid repeated calls to g_list_length

commit 6bcd69026b6c09ead4ac1daad461a960f8dd362b
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Tue Oct 19 19:12:33 2021 +0800

    [gnc-budget-view] avoid O(N^2) g_list_length calls



Summary of changes:
 gnucash/gnome/gnc-budget-view.c  |  4 ++--
 libgnucash/engine/Recurrence.c   |  7 ++++---
 libgnucash/engine/gnc-features.c | 24 ++++++++++--------------
 3 files changed, 16 insertions(+), 19 deletions(-)