More polish for the Sequencer processing example
New OPC.pde that uses Java sockets directly

This lets us disable the Nagle algorithm, and have finer control over error handling
Whoa, fix a terrible packet queueing bug in opcsink

This is really dumb, we weren't processing backlogged packets from the opcsink buffer. This is the cause of the ugly delays I'd been seeing in the 'waves' demo.
Update fcserver-osx with opcsink queueing fix