mail/dovecot2-pigeonhole: 0.4.8 -> 0.4.9

upgrade to follow mail/dovecot2

• Properly implemented checking of ABI version for Sieve interpreter plugins, much like Dovecot itself does for plugins. This will prevent plugin ABI mismatches.

+ Implemented a vnd.dovecot.environment extension. This builds upon the

standard environment extension and adds a few more environment items,
such as username and default mailbox. It also creates a variables
namespace so that environment items can be accessed directly. I am
still thinking about more environment items that can be added.

+ Sieve extprograms plugin: Made line endings of the input passed to the

external programs configurable. This can be configured separately for
each of the three extensions.

+ ManageSieve: Implemented proxy XCLIENT support. This allows the proxy

to pass client information to the back-end.

• ManageSieve: Fixed an assert failure occurring when a client disconnects during the GETSCRIPT command.
• doveadm sieve plugin: Fixed incorrect initialization of mail user. This caused a few memory leaks.
• sieve-filter command line tool: Fixed handling of failure-related implicit keep when there is an explicit default destination folder. This caused message duplication.
• lib-sieve: Fixed bug in RFC5322 header folding. Words longer than the optimal line length caused empty lines in the output, which would break the resulting message header. This surfaced in References: headers with very long message IDs.

PR: 203526
Submitted by: Larry Rosenman <ler@lerctr.org> (maintainer)