Log Message:
Update to 3.24
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3.24  2016-01-13
   - Update Apache 2.4 README, flesh out guts of Authz Provider notes.
   - Improve Apache 2.4 README's AuthzProvider documentation
   - Add POD to Apache2_4::AuthCookie
   - Add FAQ to Apache2_4::AuthCookie documenation
   - 2.4: document that PerlAddAuthzProvider is only needed for *custom* \ 
Requires directives.
   - 2.4: make authz_handler recognize multiple usernames in the directive like
     mod_authz_user does.
   - add test case for internal authz_handler
   - explicitly require Apache::Test 1.39 so that APACHE2_4 defines are set