Log Message:
mail/roundcube: update to 1.6.0

pkgsrc changes:
* Add "USE_TOOLS+= pax" to plugins.mk.
* Add some note to MESSAGES.
* update DESCR.

1.6.0 (2022-07-28)

We proudly announce the release of the next major version 1.6 of Roundcube
webmail.  With this milestone we cleaned up the codebase and bring full
support for PHP 8.1.  The most noteworthy changes, as already announced with
the beta release, are:

* PHP 8.1 support
* Dropped support for PHP < 7.3
* Support responses (snippets) in HTML format
* Option to purge deleted mails older than 30, 60 or 90 days
* Unified and simplified services connection config options
* Removed the Classic and Larry skins from the release packages
* SQLite: Use foreign keys, require SQLite >= 3.6.19

See the full changelog in the release notes on the Github download page.

Breaking Changes to 1.5 and prior versions

The following config options have either been removed or renamed:

1. IMAP:

   * renamed default_host to imap_host
   * removed default_port option (non-standard port can be set via
     imap_host)
   * set "localhost:143" as a default for imap_host

2. SMTP:

* renamed smtp_server to smtp_host
* removed smtp_port option (non-standard port can be set via smtp_host)
* set "localhost:587" as a default for smtp_host

3. LDAP:

* removed port option from ldap_public array (non-standard port can be set
  via host)
* removed use_tls option from ldap_public array (use tls:// prefix in host)

4. Managesieve:

* removed managesieve_port option (non-standard port can be set via
  managesieve_host)
* removed managesieve_usetls option (set tls:// prefix to managesieve_host)