* removed http_accept_ranges()
* output "Redirecting to <a>URI</a>." in http_redirect() for full RFC compliance
* fixed http_cache_last_modified(): if parameter was omitted, would have always sent 304 Not Modified
* removed http_accept_ranges()
* output "Redirecting to <a>URI</a>." in http_redirect() for full RFC compliance
* fixed http_cache_last_modified(): if parameter was omitted, would have always sent 304 Not Modified