Merge a number of assertion failure fixes to the 3.0 branch.

test/mjsunit/regress/regress-1104.js

 // Copyright 2011 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 17 matching lines @@
 // A redeclaration of a variable that aliases a parameter and so rewrites to
 // an arguments object access should not record duplicate AST IDs for
 // bailout.
 function test(f) {
   function f() {}
   function f() {}
   return arguments;
 }
 
 test();