* rx_hostname and port combo to one, or hostname to all, or a vector of hostnames and ports, ignoring none or empty, then verifying no duplicates for the host port combo including from shared memory
* extracted function for rx_hostname (#694)
* c++14 revert
* unique hostname-port combo for port, hostname, rx_tcpport (#696)
* verify unique combo for rx_port as well
* check unique hostname-port combo also when setting control port, hostname, rx_hostname and rx_tcpport
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Co-authored-by: Erik Fröjdh <erik.frojdh@gmail.com>
Co-authored-by: Erik Frojdh <erik.frojdh@psi.ch>