• Update devel/courier-unicode to 2.1
• Convert to USES localbase
• Update mail/cone to 1.0 [1]
• Update mail/courier-imap to 5.0.0
• Add LICENSE
• Update mail/maildrop to 3.0.0
• Remove IDN option since it's now mandatory
• Update mail/sqwebmail to 6.0.0 [2]
• Update security/courier-authlib to 0.69.0
• Add note to UPDATING
• Silence some portlint warnings

PR: 231471 [1]
Submitted by: me
Approved by: Maintainer timeout [1],

			oliver@ [2]

Differential Revision: https://reviews.freebsd.org/D17234