Must fix - Win32 can't deal with this code, and we can no longer fix
  sysv mutexes with an APR_USE_ test... we have to look at the choice!

Reviewed by:	Brian Pane, Justin Erenkrantz


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@99144 13f79535-47bb-0310-9956-ffa450edef68