* Yahoo! is not supporting search by UID so I can't identify the new
the UID after I upload. This inability to correlate the local and
remote messages means that we wind up syncing the same message back
down, in a loop, which spawns more messages.
* Yahoo! has partial support for UIDPLUS, and reports the new UID when
I append (upload) messages.
* Modify IMAP parser to parse response lists
* When APPENDUID is reported, use it (and skip the search)
* Modify the few other existing users of response lists to use the
parsed versions instead. Provided a couple of lightweight utilities
to make it easier to work with ImapList.
* Unit tests for most of it.
* Optimization: share a static date/time parser for all IMAP connections
Bug: 2448220
Change-Id: Ic10fc1a195ccf4671a498188cc8b17848c8d9df7
c4fcd852ba