Fix string split in embedded javascript as part of fixRequireConfig

task.

@@ -116,7 +116,7 @@ module.exports = function (grunt) {
                 ' for (prop in overlay) {',
                 '  value = overlay[prop];',
                 '  ptr = require;',
-                '  list = split(".", prop);',
+                '  list = prop.split(".");',
                 '  for (i = 0; i < list.length; i++) {',
                 '   if (!ptr[list[i]]) ptr[list[i]] = {};',
                 '   ptr = ptr[list[i]];',