#943 Using Enumerator.outputStream() to stream datasets rather than preparing a temporary file.  (Requires that the SIP-Creator cope with content-length = -1)
#943 Needed Enumerator.eof.  Spec commented out still
#943 SipCreatorEndPointSpec now writes SIP-Zip to a temporary file
Merge pull request #945 from delving/13.06-issue943

13.06 issue943