Added AP_DECLARE_DATA to unixd_config, so that it makes it into the exp file.

Submitted by: Mark Nesbitt <mnesbitt@us.ibm.com>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91022 13f79535-47bb-0310-9956-ffa450edef68