grab this fix from 2.1-dev:

 mod_isapi: GetServerVariable returned improperly terminated header
 fields given "ALL_HTTP" or "ALL_RAW".

PR:                20656
Submitted by:	   Jesse Pelton <jsp pkc.com>
Reviewed by:	   trawick, stoddard, nd


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@103528 13f79535-47bb-0310-9956-ffa450edef68