gnucash master: Multiple changes pushed

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/1510f349 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/bd6840e0 (commit)
	from  https://github.com/Gnucash/gnucash/commit/57fe0515 (commit)



commit 1510f3492626922832220483e70487ea92e45c12
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue May 12 14:06:29 2020 -0700

    Use std::unique_ptr instead of std::shared_ptr.
    
    No need to share ownership.

commit bd6840e035c2d9b3a928c938b82af3b857e7ca76
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue May 12 12:00:09 2020 -0700

    Fix incorrecly logging all possible messages regardless of log level.



Summary of changes:
 libgnucash/engine/qoflog.cpp | 62 +++++++++++++++++++++++++++-----------------
 1 file changed, 38 insertions(+), 24 deletions(-)