Moved config.m4 to config9.m4. This allows most (if not all) other modules

Moved config.m4 to config9.m4. This allows most (if not all) other modules
to be handled before mod_so, so that sharedobjs is set if needed, so
that mod_so is enabled as needed if building any modules shared.
NOTE: This is no guarantee. There exists the possibility that a config.m4
could be used after this one, and that the modules it specifies are the only
ones that the server will be built with as shared. This is highly unlikely,
but possible.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88781 13f79535-47bb-0310-9956-ffa450edef68