SpiderMonkey 38 upgrade: 12/35

Major update to the JSClass stubs. Based on patch by leper.
https://bugzilla.mozilla.org/show_bug.cgi?id=1103152

This was SVN commit r18666.

source/scriptinterface/ScriptInterface.cpp

@@ -81,9 +81,9 @@ namespace
 
 JSClass global_class = {
 	"global", JSCLASS_GLOBAL_FLAGS,
-	JS_PropertyStub, JS_DeletePropertyStub, 
-	JS_PropertyStub, JS_StrictPropertyStub,
-	JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub,
+	nullptr, nullptr,
+	nullptr, nullptr,
+	nullptr, nullptr, nullptr,
 	nullptr, nullptr, nullptr, nullptr,
 	JS_GlobalObjectTraceHook
 };