* Remove all use of Strings in favor of the parser's static final int's
* Strings remain in Tags for debugging output only
* Renamed lots of classes to be more consistent
* Centralized logging behavior in Eas class
* Found and fixed some bugs in the process:
- Account deletion wasn't removing HostAuth's correctly in the trigger
- Adding a second EAS account was trashing the first one
- Fixed looping sync behavior caused by Exchange 2003 bug
* 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.
