Win32-enable, unix threaded-enable the mod_log_forensic module.

  * adds a get_forensic_id() function, differing between win32,
    threaded, and non-threaded platforms (threaded and win32
    platforms get instead an pid:tid:time:seq identifier.)

  * stop the module config abuse, and simply use r->notes (this
    requires the 169534 svn patch already applied.)

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@169535 13f79535-47bb-0310-9956-ffa450edef68