lwip_getaddrinfo() function

Translates the name of a service location (for example, a host name) and/or a service name and returns a set of socket addresses and associated information to be used in creating a socket with which to address the specified service. Memory for the result is allocated internally and must be freed by calling lwip_freeaddrinfo()! dns_gethostbyname can return as many address as configured in DNS_MAX_HOST_IP. Also, service names are not supported (only port numbers)! @todo: implement AI_V4MAPPED, AI_ADDRCONFIG