zeromq: Remove blocking Add timeout in xml, fix doxygen
zeromq: temporarily removing QA test output to XML

The QA tests are run twice, once for stdout, once for XML out, this
causes problems because the network ports don't recycle fast enough
and the blocks get 'address in use' errors.
zeromq: fixing up QA code for vlen
zeromq: update examples and install
zeromq: Get the qa code to pass, however still getting stuck