*) Introduce "ap_conf_vector_t" type to assist with legibility and provide

   some type safety. (unfortunately, our old "void*" is type-safe with the
   new one, but over time we should be better)

*) Propagate the new type to all appropriate functions.

*) Random cleaning, whitespace, stylistic nits.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88225 13f79535-47bb-0310-9956-ffa450edef68