* Remove locking for writing to the rewritelog. There seems to be no reason

  why locking is required here.
  See also: http://marc.info/?l=apache-httpd-dev&m=124282193217344&w=2

PR: 46942
Submitted by:  Dan Poirier <poirier pobox.com>
Reviewed by: rpluem


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@783734 13f79535-47bb-0310-9956-ffa450edef68