Need to reset tracker if using POP3
[mms] Fix parsing continuation requests sent in SASL AUTH command (RFC 5034).
[mms] Workaround servers who don't advertise UIDL until after authentication.
Fix detecting EAS version on clients that only support 14.0

...and use parameter compression.
Fix OPTIONS/SYNC loop due to incorrect handling of MS-RP header.

Some devices will reset sync state everytime the MS-RP header is
sent, regardless of if the versions are newer or not. Track the
last announced version header sent to the devce and only send
the MS-RP header if the versions are different.
Merge branch 'master' into horde_5_2