Merge r1766998 from trunk:

Follow up to r1739201.
These APR_TIMEUP special cases are now handled by ap_map_http_request_error().

Reviewed by: jailletc36, jim, covener


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1807753 13f79535-47bb-0310-9956-ffa450edef68