First cut at port to apache-2.0. Simple tests are working.
Error handling is still not quite clear in some cases (especially in
conjunction with ap_pcfg_openfile), and random-number generation
still needs to be moved into APR.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@84098 13f79535-47bb-0310-9956-ffa450edef68