Merge r1397687 from trunk:

configure: Fix processing of --disable-FEATURE for various features.

Submitted by: trawick
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1430949 13f79535-47bb-0310-9956-ffa450edef68