backport this from 2.1-dev:

  Remove formatting characters from ap_log_error() calls.  These
  were escaped as fallout from CAN-2003-0020.

Submitted by: Eric Covener <ecovener gmail.com>
Reviewed by:  trawick, jorton, pquerna



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@159355 13f79535-47bb-0310-9956-ffa450edef68