lint: Fail on js syntax errors

setup/test/tests/test.jslint.php

+<?php
+require_once "class.test.php";
+
+class JsSyntaxTest extends Test {
+    var $name = "JavaScript Syntax Checks";
+
+    function testLintErrors() {
+        $exit = 0;
+        $root = get_osticket_root_path();
+        foreach (glob_recursive("$root/*.js") as $s) {
+            ob_start();
+            system("jsl -process $s", $exit);
+            $line = ob_get_contents();
+            ob_end_clean();
+            if ($exit == 3)
+                $this->fail($s, 0, $line);
+            else
+                $this->pass();
+        }
+    }
+}
+
+return 'JsSyntaxTest';
+?>
+