S3 IO library: change the new / native S3 IO method prefix name to be the same as libs3 method, to use make new method the default. Change get range logic to allow 0 range requests.
S3 IO library: change the new / native S3 IO method prefix name to be the same as libs3 method, to use make new method the default. Change get range logic to allow 0 range requests.

quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs