tokens2.Create needs to wrap its AuthOptions now.
Merge pull request #242 from smashwilson/unbreak-acceptance

Identity acceptance tests
rax cloud files delegation requests
unit tests for delegated functions; factor out common test http handlers into 'fixtures.go' files
'NewStorageClientV1' -> 'NewObjectStorageClientV1'
rax object storage and cdn clients
cdn operations; unit test stubs
rax cdn unit tests
'*Opts' -> '*OptsBuilder'
rax accounts, containers acceptance tests
rax objects unit test; fix for creating object content
rax cdnobjects unit test
update result to be 'gophercloud.CommonResult'
rax bulk operations; results update [not working]
bulk delete; finish updating common.Result structs
fixes to get acceptance tests passing