tweak the responsibilities of make_sock() and alloc_listener()

because we need to resolve the hostname (i.e., call apr_getaddrinfo())
before creating the socket so that we get a socket of the appropriate
family

also, simplify some of the address displays in some error logs


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@87371 13f79535-47bb-0310-9956-ffa450edef68