* mod_cgid: Pass along empty command line arguments from an ISINDEX

    query that has consecutive '+' characters in the QUERY_STRING,
    matching the behavior of mod_cgi.
    Trunk version of patch:
      http://svn.apache.org/viewvc?rev=682389&view=rev
      http://svn.apache.org/viewvc?rev=682475&view=rev
    Backport version for 2.2.x of patch:
      http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/generators/mod_cgid.c?r1=682475&r2=682389



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@686392 13f79535-47bb-0310-9956-ffa450edef68