Merge r661666 from trunk:
Prevent CSRF attacks against the balancer-manager (
CVE-2007-6420)
* modules/proxy/mod_proxy_balancer.c (balancer_init): New function.
(balancer_handler): Place a nonce in the form output, and check that
the submitted form data includes that nonce.
(ap_proxy_balancer_register_hook): Register the new post_config hook.
Submitted by: jorton
Reviewed by: jim