Add more tests for the CloudFiles driver and fix some places where the base_headers dictionary was manipulated directly without creating a copy first.
Add more tests for the CloudFiles driver and fix some places where the
base_headers dictionary was manipulated directly without creating a copy first.


git-svn-id: 353d90d4d8d13dcb4e0402680a9155a727f61a5a@1090911 13f79535-47bb-0310-9956-ffa450edef68

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