SECURITY: CVE-2015-3183 (cve.mitre.org)

Replacement of ap_some_auth_required (unusable in Apache httpd 2.4)
with new ap_some_authn_required and ap_force_authn hook.  

Submitted by: breser
Backports: r1684524
Reviewed by: wrowe, ylavic, jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1684525 13f79535-47bb-0310-9956-ffa450edef68