* Renamed ISyncManager/ISyncManagerCallback to IEmailService/IEmailServiceCallback
* Restored ExchangeTransportExample to its original state; created ExchangeStore to
handle validation functionality instead; updated stores.xml to reflect these changes.
* Add support for AccountManager in EAS code (this is necessary for the contacts and
calendar providers to work with syncable data); created EasAuthenticatorService to
as our authenticator, which required adding authenticator.xml and modifying the
manifest to register our service with AccountManager metadata
* Created EmailServiceProxy as a convenience for the UI in calling into the EAS
service; created EmailServiceStatus class for status codes in callbacks.
* Rewrote push logic to encompass multiple folders (i.e. calendar/contacts)
* Change inbox from push frequency to ping frequency after initial sync
* Implement upsync logic for email (i.e. sending changes to the server)
* Did cleanup of some files (there's still some to do) re: format, style
* Initial one-way sync of Contacts data - add and delete are implemented
* Created adapter package for all parts of the EAS adapter
* Created utility package for utility code that will eventually be merged
with code in the Email application (Base64, QuotedPrintable, etc.)
* SyncManager/AbstractSyncService can be used in the future for other
protocols, especially IMAP push