Fixed a few more incompatibilities

src/regexp-delay.js

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 142 matching lines @@
   var matchIndices = %RegExpExecGlobal(regexp, string);
   if (matchIndices.length != 0) {
     regExpCaptures = matchIndices[matchIndices.length - 1];
     regExpSubject = regExpInput = string;
   }
   return matchIndices;
 }
 
 
 function RegExpExec(string) {
+  if (!IS_REGEXP(this)) {
+    throw MakeTypeError('method_called_on_incompatible', ['RegExp.prototype.exec', this]);
+  }
   if (%_ArgumentsLength() == 0) {
     if (IS_UNDEFINED(regExpInput)) {
       throw MakeError('no_input_to_regexp', [this]);
     }
     string = regExpInput;
   }
   var s = ToString(string);
   var length = s.length;
   var lastIndex = this.lastIndex;
   var i = this.global ? TO_INTEGER(lastIndex) : 0;
@@ skipping 187 matching lines @@
   %DefineAccessor($RegExp, "$'", SETTER, NoOpSetter, DONT_ENUM | DONT_DELETE);
 
   for (var i = 1; i < 10; ++i) {
     %DefineAccessor($RegExp, '$' + i, GETTER, RegExpMakeCaptureGetter(i), DONT_DELETE);
     %DefineAccessor($RegExp, '$' + i, SETTER, NoOpSetter, DONT_DELETE);
   }
 }
 
 
 SetupRegExp();