Disabled default SO_REUSEPORT usage in Poco library and improved listening address configurations.

Disabled the incorrect use of the socket option SO_REUSEPORT, which was incorrectly enabled by default in the Poco library. Note that on Linux there is no longer any reason to simultaneously specify the addresses :: and 0.0.0.0 for listen – use just ::, which allows listening to the connection both over IPv4 and IPv6 (with the default kernel config settings). You can also revert to the behavior from previous versions by specifying <listen_reuse_port>1</listen_reuse_port> in the config.