Binary messages can be fragmented too!

We add two methods in the node: setBinary() and isBinary().
Then, the server is a bit modified in order to OPCODE_BINARY_FRAME
adopts the OPCODE_TEXT_FRAME workflow.
[auto] Merge from Websocket

    • #c988def — Binary messages can be fragmented too! (Ivan Enderlin, 2013-03-15)

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Merge remote branch 'library-websocket/master'