Merge r1719252, r1719254, r1719255, r1720996 from trunk:

Use 'ap_array_str_contains' to simplify code.

Use 'ap_array_str_contains' to simplify code.

Use 'ap_array_str_contains' to simplify code.

Use 'ap_array_str_contains' to simplify code.
Submitted by: jailletc36
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1725507 13f79535-47bb-0310-9956-ffa450edef68