Revision 1885610

Backport to v2.4:

  *) Easy patches: synch 2.4.x and trunk
        - mod_dav: save a few cycles
        - mod_{ssl,md}: init_stapling_status hooks should return an int
        - util_md5: avoid temporary stack result in ap_md5_binary()
        - mod_proxy_balancer: Add a missing </tr>
        - mod_md: get_stapling_status hooks should return an int
        - mod_session: Improve a message about SessionExpiryUpdateInterval values
     trunk patch:
          http://svn.apache.org/r1837388
          http://svn.apache.org/r1876549
          http://svn.apache.org/r1877551
          http://svn.apache.org/r1882210
          http://svn.apache.org/r1882399
          http://svn.apache.org/r1883414
     2.4.x patch: svn merge -c 1837388,1876549,1877551,1882210,1882399,1883414 ^/httpd/httpd/trunk .
     +1: jailletc36, ylavic, minfrin