Added basic integration tests for ElasticTranscoder.
Added basic integration tests for IAM.
Added basic integration tests for AWS Import/Export.
Added basic integration tests for AWS OpsWorks.
Added based integration tests for AWS Storage Gateway.
Added basic integration tests for SWF.
Added basic integration tests for AWS STS.
Added basic integration tests for SQS.
Fixed an issue with the XML parser and flat lists.
Removed the XML namespace from services that don't require it.
Updated the XML error parser to deal with SQS error prefixes.
Added a SQS plugin to ensure reqeusts are always made against the endpoint given in the queue url.
Updated two broken tests.