Implement sloppy-mode block-defined functions (Annex B 3.3)

test/mjsunit/harmony/block-let-semantics-sloppy.js

 // Copyright 2011 the V8 project authors. All rights reserved.
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 // 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
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@@ skipping 109 matching lines @@
 
   assertEquals(3, g2());
   assertEquals(3, eval("g2()"));
   // function scoped function declaration
   function g2() {
     return 3;
   }
 }
 f();
 
-// Test that a function declaration introduces a block scoped variable.
-TestAll('{ function k() { return 0; } }; k(); ');
+// Test that a function declaration introduces a block scoped variable
+// and no function hoisting if there is a conflict.
+TestFunctionLocal('{ function k() { return 0; } }; k(); let k;');
 
 // Test that a function declaration sees the scope it resides in.
 function f2() {
   let m, n, o, p;
   {
     m = g;
     function g() {
       return a;
     }
     let a = 1;
@@ skipping 41 matching lines @@
     }
     eval("1 + 1");
     return x + inner();
   }
 
   let x = 1;
   return middle();
 }
 
 assertEquals(2, outer());