JCLOUDS-217: Only decode strings that are actually encoded.
* Update HttpRequestTests to account for change in urlDecode.
* Related to JCLOUDS-200
Skip testDirectory on S3

This test cannot succeed due to the way directories are implemented as
prefix pseudo-files in S3.
Allocate new container name using prefix

Before we used the previous container name, which kept appending and
hit S3 limits during integration tests like:

Caused by: java.lang.IllegalArgumentException: Object 'gaul-blobstore27-4348532805015069992-1155797412711190448-1465016400636204031' doesn't match S3 bucket virtual host naming convention. Reason: Can't be null or empty. Length must be 3 to 63 symbols.. For more info, please refer to http://docs.amazonwebservices.com/AmazonS3/latest/index.html?BucketRestrictions.html
Simplify testPutFileParallel

Create only one temporary file and use explicit delete instead
finalization to remove it.
Support Integer.MAX_VALUE size PUTs

Previously jclouds enforced Integer.MAX_VALUE - 1 size.  Tested
against Atmos Online.
JCLOUDS-166, JCLOUDS-167 - Removing async from vcloud and Terremark APIs/providers