After appending a message to a mailbox (i.e. like appending to the 'sent'
mailbox after composing a new message), we would try to determine if the
append was successful by searching for the message. Most servers return an
APPENDUID response with the message's new UID. However, on those that don't
support APPENDUID, we need to perform a SEARCH for the message id. On one
set of these servers, the search would fail if the query string was
surrounded by parenthesis. However, another set of servers will fail if the
query string is not surroudned by parenthesis. So, we now try both ways.
Change-Id: I5a82ad241fb927e28aa5d05376568d5eac266a95
518fc490b2