Enhancements for APR network_io. Adds separate local/remote access methods for

a socket's port, IP address and sockaddr_in.

Updates for Apache code to use these, allowing the correct IP address of
clients to be logged.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@84029 13f79535-47bb-0310-9956-ffa450edef68