BUGFIX Ensure PHPUnit 3.6 is available, show a nice message if not

tests/bootstrap.php

@@ -5,6 +5,12 @@
 // Make sure display_errors is on
 ini_set('display_errors', 1);
 
+// Check we're using at least PHPUnit 3.6
+if(version_compare(PHPUnit_Runner_Version::id(), '3.6', '<')) {
+	echo 'PHPUnit 3.6 required to run tests using bootstrap.php';
+	die();
+}
+
 // Fake the script name and base
 global $_SERVER;
 if (!$_SERVER) $_SERVER = array();