t/lib-httpd/apache.conf: load compat access module in apache 2.4

In apache 2.4, the "Order" directive has gone away in favor
of a new system in mod_authz_host. However, since we want
our config file to remain compatible across multiple Apache
versions, we can use mod_access_compat to keep using the
older style.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/lib-httpd/apache.conf

@@ -54,6 +54,9 @@ ErrorLog error.log
 <IfModule !mod_authz_core.c>
 	LoadModule authz_core_module modules/mod_authz_core.so
 </IfModule>
+<IfModule !mod_access_compat.c>
+	LoadModule access_compat_module modules/mod_access_compat.so
+</IfModule>
 </IfVersion>
 
 PassEnv GIT_VALGRIND