Add support for abbreviated dates with no timestamp (eg, "2009-01-02") to
parseEmailDateTimeToMillis.
Bug:14496986
Change-Id: Ifc77cb75fd9e23536b48c8f6ecefc0e2e8f1cc2c
Detect fully qualified and abbreviated date/time stamps in parseDateTime.
Previously parsed fully qualified forms like 20090211T180303Z; now also
parses 20090211.
Bug:14279251
Change-Id: I9a99ae16a5c1fe87b977fbebdba307baa653d539