Feature/migratenetmq4 samples

@drewnoakes i think it's for review now, but i'm didn't port two last samples Multitheading and LazyPirate.Client2 those two still broked:

Multitheading/Multithreaded Service: need more work because of changes in NetMQQueue implementation
Pirate Pattern/LazyPirate.Client2: need more work because of changes in the style of pub-sub implementation.

NetMQ / Samples