Merge r1100511 from trunk:

use APR_STATUS_IS_TIMEUP() instead of direct comparison with APR_TIMEUP.

Submitted By: Ruediger Pluem
Reviewed By: wrowe, rjung, covener
  http://mail-archives.apache.org/mod_mbox/httpd-dev/201105.mbox/%3C4DC4D6A8.7070804@apache.org%3E



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1100512 13f79535-47bb-0310-9956-ffa450edef68