First order simplification; Add IncludeOptional for introducing

wildcard pattern matches or specific includes which may be omitted.
Refactors ap_process_resource_config() to deal efficiently with 
a single file, and renames the new _ex() flavor per list discussion
to  ap_process_fnmatch_configs() for wildcard processing.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@931435 13f79535-47bb-0310-9956-ffa450edef68