BUG: Fix for Cookie expiry timeout being passed as a large number on 64 ...

Pull request to fix a bug on 64 bit machines where the cookie expiry timeout can cause a error due to being a large number.
Have tested this on my local machine by setting the cookie timeout to a large number by adding the following line to _config.php

Config::inst()->update('Session', 'timeout', time());

Below is some history from some comments on commit 4ef83a2895bd05a943d13a590680264a2f7f262b



May be a bug but I am running into issue on a 64 bit machine where the timestamp for the expiry date in cookie is becoming quite large white in turns produces a date way past 2038 or 9999.

Which in turn produces the following warning

[Warning] Expiry date cannot have a year greater then 9999

The link below gives a better description of this.

http://stackoverflow.com/questions/10070673/http-cookie-expire-time-average-maximum

Below if a rough patch I have done which adds a check on the expiry timestamp and changes it if it is greater then the maximum date.

--- a/control/Cookie.php
+++ b/control/Cookie.php
@@ -107,7 +107,14 @@ class Cookie {
$domain = null, $secure = false, $httpOnly = false
) {
if(!headers_sent($file, $line)) {
$expiry = $expiry > 0 ? time()+(86400*$expiry) : $expiry;

// check that the expiry is not greater then 9999
//echo gmdate("Y-m-d\TH:i:s\Z", $expiry); exit;
$maxTimestamp = strtotime('31-12-9998');
if ($expiry >= $maxTimestamp) {
$expiry = time()+(3600 * 24 * 7);
} $path = ($path) ? $path : Director::baseURL(); setcookie($name, $value, $expiry, $path, $domain, $secure, $httpOnly); $_COOKIE[$name] = $value;