Revert r1371878 -- default configuration changes that drop the DNT

header from IE10.

See:
  Message-ID: <CALK=YjMGPNHBqNiad-ghzcEzxDovQgYOpjpSSyXmN=r74v43qg@mail.gmail.com>
  PR 53845



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1386913 13f79535-47bb-0310-9956-ffa450edef68