Stop being case-insensitive with section directives. This fixes the...

Stop being case-insensitive with section directives. This fixes the highlighting issue with mod_proxy and others, although a longer lasting solution might have to be worked on.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1331688 13f79535-47bb-0310-9956-ffa450edef68