* Renamed FSFileIterator -> FSFileBackendFileList
* Renamed SwiftFileIterator -> SwiftFileBackendFileList and added it to autoloader
* A few minor doc fixes
* Made SwiftFileBackend respect the 'latest' parameter of various functions via "X-Newest: true" header. Added to TODO in the doGetFileStat() function, as cloudfiles needs upstream changes for that.
* Fixed SwiftFileIterator to return paths relative to the given directory.
* Clean up for FSFileBackend trailing slash handling.