Backport the accepted patch to honor alternate SSLMutex flavors,
  just as we do for AcceptMutex (hint: shared code could be optimized
  here, but this is the patch tested and accepted by the list.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@98973 13f79535-47bb-0310-9956-ffa450edef68