Back port W. Rowe's 2.0 a fix for the /?M=D autoindex problem.

These two lines missing from the fast-redirect logic of mod_negotation.c are what
allowed  mod_dir to reconstruct the _original_ path (to index.html instead of the
new-found index.html.foo), merging the uri (unchanged) with the query string.
It then failed, leaving an autoindex listing iff the user provided a query string.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@91232 13f79535-47bb-0310-9956-ffa450edef68