Don't close S3 connections with a stream response

I was overzealous in 2fb90e1ff4240d1
Merge pull request #113 from labisso/overzealous-s3-conn-closing

Don't close S3 connections with a stream response
[maven-release-plugin] prepare release dasein-cloud-aws-2013.07.11
[maven-release-plugin] prepare for next development iteration
CloudFront broke due to summer time change
Merge pull request #120 from maksimov/2013.07

CloudFront broke due to summer time change
[maven-release-plugin] prepare release dasein-cloud-aws-2013.07.12
[maven-release-plugin] prepare for next development iteration
FB 4309: correct max IOPS is 4000