Fix updating of property attributes for elements.

test/test262/test262.status

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@@ skipping 317 matching lines @@
 # S15.1.1.2_A2_T2 would fail if it weren't bogus in r97. sputnik bug #45.
 S15.1.1.3_A2_T1: FAIL_OK  # undefined
 S15.1.1.3_A2_T2: FAIL_OK  # undefined
 
 # Array.prototype.to[Locale]String is generic in ES5.
 S15.4.4.2_A2_T1: FAIL_OK
 S15.4.4.3_A2_T1: FAIL_OK
 
 ######################### UNANALYZED FAILURES ##########################
 
-# Bug? Object.defineProperty - Update [[Enumerable]] attribute of 'name'
-#      property to true successfully when [[Enumerable]] attribute of 'name'
-#      is false and [[Configurable]] attribute of 'name' is true,  the 'desc'
-#      is a generic descriptor which only contains [[Enumerable]] attribute
-#      as true, 'name' property is an index data property (8.12.9 step 8)
-15.2.3.6-4-82-18: FAIL
 # Bug? Object.defineProperty - 'O' is an Arguments object of a function that has
 #      formal parameters, 'name' is own property of 'O' which is also defined in
 #      [[ParameterMap]] of 'O', and 'desc' is data descriptor, test updating
 #      multiple attribute values of 'name' (10.6 [[DefineOwnProperty]] step 3
 #      and 5.b)
 15.2.3.6-4-292-1: FAIL
 # Bug? Object.defineProperty - 'O' is an Arguments object of a function that has
 #      formal parameters, 'name' is own data property of 'O' which is also
 #      defined in [[ParameterMap]] of 'O', test TypeError is thrown when
 #      updating the [[Value]] attribute value of 'name' which is defined as
@@ skipping 212 matching lines @@
 S15.1.3.2_A2.5_T1: SKIP
 S15.1.3.3_A2.3_T1: SKIP
 S15.1.3.4_A2.3_T1: SKIP
 S15.1.3.1_A2.5_T1: SKIP
 S15.1.3.2_A2.5_T1: SKIP
 
 [ $arch == mips ]
 
 # Skip all tests on MIPS.
 *: SKIP