- update to 5.1.8
* gcc 12 and autotools update. OpenSSL 3.0 update.
* courier, courier-imap: remove the --disable-root-check configure
option, now that make check can deal with it.
* Add scripts to create installable .deb packages, update
documentation.
* imap/authenticate_auth.c: Fix broken SASL authentication.
* Adjust behavior of inherited ACLs. After deleting and recreating
a folder, have the recreated folder inherit its parent folder's ACLs,
normally, instead of mysteriously restoring whatever ACLs the folder
had when it was deleted.
* Fixes to Makefile to workaround test suite failures related to
permission checking when make check runs as root.
* Fix minor memory leaks.