Rewrote the StreamReader in pydap.handlers.dap to just pass through the incoming iterator parameter while fast forwarding past DDS header; ensured that all of the unpack_*() methods in pydap.handlers.dap pass streams (i.e. something with a read() method); further work in checking for unicode and outputting numpy type 'S'; eliminated the TestDump test case (complicated to maintain and much of it wasn't testing the actual code)