Fix --sysconfdir and --localstatedir, which were being ignored.

Fix --enable-layout to work.

showstoppers--

Note: As far as we can tell, autoconf will not let us override our layout
settings from paramers like --prefix, etc. This is unfortunate, but
we will not let this get in the way of --enable-layout working. This
will be made clear in the docs.

PR: 9124, 9873, 9885, 9888


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93600 13f79535-47bb-0310-9956-ffa450edef68