Remove dependence on server config from ap_dbd_prepare, as that may

be called in per-directory config functions where there is no
server context causing segfault.
Discussion at
http://mail-archives.apache.org/mod_mbox/httpd-dev/200607.mbox/<831327593.20060720023332%40engec.ru>
and subsequent thread.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@424798 13f79535-47bb-0310-9956-ffa450edef68