yanking some unnecessary networking apis from 1.0... time to holler

[Jeff Trawick]

(or +1, as the case may be)
remove:
  apr_sockaddr_port_get() - caller can read from sockaddr directly
  apr_sockaddr_ip_set() - limitation of IPv4 n.a.s. is bogus
                        caller should use apr_sockaddr_info_get()
shrug:
  apr_sockaddr_port_set() - bad for caller to set in
                         sockaddr directly; I'm not sure how useful
                         it is to use apr_sockaddr_info_get() but
                         then change the port later
but leave:
  apr_sockaddr_ip_get() - this does interesting work that we don't
                        want to do ahead of time just in case
                        this info will be needed
Also, change the docs for apr_socket_connect() to remove the hint about passing 
NULL for the sockaddr.