Update mergeinfo only: 1374214,1374216,1375445,1467593 were merged

from trunk to 2.4.x in r1476685.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1826324 13f79535-47bb-0310-9956-ffa450edef68