Log Message:
mail/dovecot2-pigeonhole: update to 0.5.5

Update dovecot2-pigeonhole to 0.5.5 for dovecot 2.3.5.

v0.5.5 2019-03-05  Stephan Bosch <stephan@rename-it.nl>

	+ IMAPSieve: Add new plugin/imapsieve_expunge_discarded setting which
	  causes messages discarded by an IMAPSieve script to be expunged
	  immediately, rather than only being marked as "\Deleted" (which is
	  still the default behavior).
	- IMAPSieve: Fix panic crash occurring when a COPY command copies
	  messages from a virtual mailbox where the source messages originate
	  from more than a single real mailbox.
	- imap4flags extension: Fix deleting all keywords. When the action
	  resulted in all keywords being removed, no changes were actually
	  applied.
	- variables extension: Fix truncation of UTF-8 variable content. The
	  maximum size of Sieve variables was enforced by truncating the
	  variable string content bluntly at the limit, but this does not
	  consider UTF-8 code point boundaries. This resulted in broken UTF-8
	  strings. This problem also surfaced for variable modifiers, such as
	  the ":encodeurl" modifier provided by the Sieve "enotify" \ 
extension.
	  In that case, the resulting URI escaping could also be truncated
	  inappropriately.
	- IMAPSieve, IMAP FILTER=SIEVE: Fix replacing a modified message. Sieve
	  scripts running in IMAPSIEVE or IMAP FILTER=SIEVE context that
	  modify the message, stored the message a second time, rather than
	  replacing the originally stored unmodified message.
	- Fix segmentation fault occurring when both the sieve_extprograms
	  plugin (for the Sieve interpreter) and the imap_filter_sieve plugin
	  (for IMAP) are loaded at the same time. A symbol was defined by both
	  plugins, causing a clash when both were loaded.