backport r1043023 from trunk:

    PR50349: Honor 'AcceptPathInfo OFF' during internal redirects,
    such as per-directory mod_rewrite substitutions.   This would be left floating 
    around in the request_rec with a pcalloc'ed value, so the core fixup
    hook thought some module had overridden it.

Reviwed by: covener, rpluem, jorton



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1068255 13f79535-47bb-0310-9956-ffa450edef68