Description:
------------
after runTasks() the task object is never freed, causing a 
memory leak.

run the included sample client and watch the process size. On 
my system is grows roughly by 1MB every second.


The same bug is currently in the perl interface and I have no 
idea how to fix it. ;-)

Reproduce code:
---------------
<?php
$gmc= new GearmanClient();
$gmc->addServer();

while (1) {
	$task= $gmc->addTask("reverse", "this is a test", NULL);	
	$gmc->runTasks();
}

exit;
?>