Warn user about default path change if /usr/local/etc/httpd is found.

Submitted by:	Lars Eilebrecht
Reviewed by:	Martin Kraemer, Dean Gaudet


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79497 13f79535-47bb-0310-9956-ffa450edef68