First pass at mod_so with the new APR dso calls. It builds OK, but as

I can't build any dynamic modules to properly test it with I'll let
others do that!  It'll need some work, but I wanted to get code in so
people can start hacking it around :)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@84893 13f79535-47bb-0310-9956-ffa450edef68