[wsia] [wsrp] [wsrp-wsia joint interfaces] Merged interfaces document

Here is a draft of the merged interfaces document that Carsten and I have
been working on this week. The largest conceptual change from the previous
0.44 Joint Spec Draft is the appearance of arrays in most of the
operations. This allows Consumers on the scale of portals to efficiently
interact with Producer services.

(See attached file: WSIA - WSRP Interface Specification.doc)