Migrate SUDS cache from GenericSoap to MessageMedia

Migrate SUDS cache from GenericSoap to MessageMedia to
prevent creating empty /tmp/suds and associated permission
problems.
Include recipient in SmsDeliveryStatus.__str__()
Get rid of SmsSendStatus, replace with SmsDeliveryStatus

Also create one SmsDeliveryStatus per recipient.
Whitespace change
Perform syslog-based logging when not on the console.