* New upstream release. Patches incorporated: - 16_update_debian (partially) - 30_pipermail_threads - 65_handle_templates_directories - 77_header_folding_in_attachments * Remove msgfmt.py, only used at build-time (closes: #555416). * Remove adduser calls for 'list' user. Base-passwd guarantees it to be available, and trying to add it if it were not present may lead to inconsistencies regarding expectations for that user. * Document second parameter of postfix-to-mailman.py to be ${mailbox}, effectively reverting inappropriate fix for #305762 (closes: #549224).