(untested) support for dynamodb iam security tokens
hopefully fix dynamodb x-amz-security-token behavior
iam security token for SQS
security token in SQS
security token in SimpleDB
security token in IAM
prepare 0.10.1
Merge branch 'master' of github.com:aristidb/aws

Conflicts:
	Aws/Sqs/Core.hs
0.10.2... 0.10.1 was a misfire
fix SQS and IAM in non-STS mode (closes #126)
0.10.3
Merge remote-tracking branch 'refs/remotes/aristidb/master'