fix(grunt-utils): correctly detect java 32bit support

Closes angular#16605

Author: icholy

lib/grunt/utils.js

@@ -221,7 +221,7 @@ module.exports = {
   //returns the 32-bit mode force flags for java compiler if supported, this makes the build much faster
   java32flags: function() {
     if (process.platform === 'win32') return '';
-    if (shell.exec('java -version -d32 2>&1', {silent: true}).code !== 0) return '';
+    if (shell.exec('java -d32 -version 2>&1', {silent: true}).code !== 0) return '';
     return ' -d32 -client';
   },