CA-150369: Update XenCenter with latest C# bindings

- Updated friendly error name for INVALID_EDITION

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
Merge pull request #254 from MihaelaStoica/xs64bit

CA-150369: Update XenCenter with latest C# bindings
Merge pull request #258 from xenserver/xs64bit

Xs64bit