Make the generated Makefile from APXS more user friendly by providing more

(adjustable) defines and a test target similar to the one mentioned in the
generated mod_xxx.c file.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81377 13f79535-47bb-0310-9956-ffa450edef68