Update the maildir header cache patch, which now also
implements the IMAP header cache. This is far more stable than
the old IMAP header cache patch.
PR: ports/70623
Submitted by: maintainer
- Update the maildir-header-cache (now uses Sleepycat DB for
faster access to very huge Maildirs).
- The new maildir-header-cache-patch makes it necessary to
use recent autotools, so update USE_AUTOMAKE_VER and USE_AUTOCONF_VER.
- Rename internal variables and fix trailing whitespaces
(portlint).
- Bump PORTREVISION
PR: ports/67872
Submitted by: maintainer