Add tests for moving and copying files from one JimfsFileSystem to another (moves/copies to FileSystems with different FileSystemProviders are handled by the Files class itself). Also fix an issue where attributes other than basic attributes were being copied from one file to a file on a different file system when COPY_ATTRIBUTES was specified--there's no guarantee that the other file system will support all the file attribute views the source file system does.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=63161492