Clean up the global object naming madness.

src/generator.js

Index: src/generator.js
diff --git a/src/generator.js b/src/generator.js
index 14df131fbeca2695cb163062f6bd5c021dffa035..316ffa0f016c586c1817c57a719ad1bb3bf13ae7 100644
--- a/src/generator.js
+++ b/src/generator.js
@@ -44,12 +44,12 @@ function GeneratorFunctionPrototypeConstructor(x) {
 
 function GeneratorFunctionConstructor(arg1) {  // length == 1
   var source = NewFunctionString(arguments, 'function*');
-  var global_receiver = %GlobalReceiver(global);
+  var global_proxy = %GlobalProxy(global);
   // Compile the string in the constructor and not a helper so that errors
   // appear to come from here.
   var f = %CompileString(source, true);
   if (!IS_FUNCTION(f)) return f;
-  f = %_CallFunction(global_receiver, f);
+  f = %_CallFunction(global_proxy, f);
   %FunctionMarkNameShouldPrintAsAnonymous(f);
   return f;
 }