backport this from Apache 2.1-dev:

 Fix mod_info to use the real config file name, not the default
 config file name.

Submitted by:  Aryeh Katz <aryeh@secured-services.com>
Reviewed by:   trawick, striker, nd


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@101650 13f79535-47bb-0310-9956-ffa450edef68