py-swiftclient: updated to 3.5.0

3.5.0

* Allow for object uploads > 5GB from stdin.

  When uploading from standard input, swiftclient will turn the upload
  into an SLO in the case of large objects. By default, input larger
  than 10MB will be uploaded as an SLO with 10MB segment sizes. Users
  can also supply the --segment-size option to alter that
  threshold and the SLO segment size. One segment is buffered in
  memory (which is why 10MB default was chosen).

* The --meta option can now be set on the upload command.

* Updated PyPy test dependency references to be more accurate
  on different distros.

* Various other minor bug fixes and improvements.

(adam)