Expand the use of check_canonical_path() for more GUCs

When Who What
2020-07-10 00:30:20 Michael Paquier (michael-kun) Closed in commitfest 2020-07 with status: Returned with feedback
2020-05-28 15:20:46 Mark Dilger (mark.dilger) Added mark.dilger as reviewer
2020-05-22 03:57:42 Michael Paquier (michael-kun) Changed authors to Michael Paquier (michael-kun)
2020-05-22 03:57:42 Michael Paquier (michael-kun) Changed targetversion to 14
2020-05-22 03:57:31 Michael Paquier (michael-kun) Attached mail thread 20200519070903.GG11835@paquier.xyz
2020-05-22 03:57:31 Michael Paquier (michael-kun) Created patch record