Fixed QUERY_STRING handling for `RewriteRule ... [P]'

in per-directory context.

Submitted by: Martin Zeh <martin.zeh@sat1.de>
Reviewed by: Ralf S. Engelschall
PR: 5073


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@84050 13f79535-47bb-0310-9956-ffa450edef68