Prevent a dll that depends on yet another missing .dll from locking up
  the system in an error popup window.  Not much problem at startup, but
  a really bad situation on a running production server.

  Also create a real ap_os_dso_error fn (not so real, won't display the
  actual missing symbol or module name).


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@86446 13f79535-47bb-0310-9956-ffa450edef68