Add vlen
zeromq: renamed source_reqrep to req_source
zeromq: remove nopoll req/rep blocks
zeromq: cleanup copyright
zeromq: rename include guards
zeromq: cleanup docs and examples
zeromq: Fix doxygen and memcpy for vlen
zeromq: Add grc examples
zeromq: Add qa tests
Merge remote-tracking branch 'iohannez/vlen' into zeromq
zeromq: removed stray debug code and cleanup
zeromq: cleanup QA code, still needs have ZMQ_LINGER set to zero
zeromq: set ZMQ_LINGER to 0 for all blocks
zeromq: Add missing timeout and blocking parameters and polling
zeromq: Add parameters to xml
zeromq: Timeout needs to be in milliseconds for zmq 3.0, close sockets
correctly, cleanup
zeromq: Remove ZMQ_NOBLOCK as we are using polling
zeromq: Add qa code
zeromq: Change string of test name
zeromq: Change the value of the poll timeout according to the zmq version.
Must be in microseconds for version 2 and below and in milliseconds for
version 3 and above.