- imap: Fixed a memory leak in ESEARCH.
- imap/pop3-login: Don't crash if passdb returns proxy field without host.
- lib-index: Added a missing sanity check for expunge-guid record's uid.
This fixes a non-self healing assert-crash.
- master: Delete also pipes from login_dir (left by v2.0).
From Brad (maintainer), ok ajacoutot@