[jan] Gracefully deal with columns removed from the backend.
Move default SQL quoting to base class.
Add a CLI formatter and handler.
Use new log handler.
Some places to use === instead of ==
phpdoc
[mms] Fix regression where INBOX may not be recognized as subscribed, if the server doesn't list it in the subscribed list.
Released Horde_Imap_Client-2.15.3
Development mode for Horde_Imap_Client-2.15.4
Merge branch 'master' into imp_6_2
Merge branch 'imp_6_2' into imp_multiple_accounts

Conflicts:
	imp/lib/Imap/Tree.php