* Fix runtime error of pyspf-milter that happens when either 'UMask'
or 'IntHosts' is set in configuration file.
* Stop installing backup files.
* Make miscellaneous paths consistent between library files, man
pages, pkg-message and rc.d script.
* Remove CONFLICTS as mail/postfix-policyd-spf-python is removed from
ports tree
MFH: 2022Q3