Fix string whitespace trimming of byte order marks.

test/test262/test262.status

 # 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 1260 matching lines @@
 15.4.4.22-9-b-26: FAIL
 # Bug? Array.prototype.reduceRight - decreasing length of array does not delete
 #      non-configurable properties
 15.4.4.22-9-b-29: FAIL
 # Bug? Array.prototype.reduceRight - element changed by getter on previous
 #      iterations is observed on an Array
 15.4.4.22-9-c-i-30: FAIL
 # Bug? Array.prototype.reduceRight - modifications to length will change number
 #      of iterations
 15.4.4.22-9-9: FAIL
-# Bug? String.prototype.trim - 'S' is a string with all WhiteSpace
-15.5.4.20-3-2: FAIL
-# Bug? String.prototype.trim - 'S' is a string with all union of WhiteSpace and
-#      LineTerminator
-15.5.4.20-3-3: FAIL
-# Bug? String.prototype.trim - 'S' is a string start with union of all
-#      LineTerminator and all WhiteSpace
-15.5.4.20-3-4: FAIL
-# Bug? String.prototype.trim - 'S' is a string end with union of all
-#      LineTerminator and all WhiteSpace
-15.5.4.20-3-5: FAIL
-# Bug? String.prototype.trim - 'S' is a string start with union of all
-#      LineTerminator and all WhiteSpace and end with union of all
-#      LineTerminator and all WhiteSpace
-15.5.4.20-3-6: FAIL
-# Bug? String.prototype.trim handles whitepace and lineterminators (\\uFEFFabc)
-15.5.4.20-4-10: FAIL
-# Bug? String.prototype.trim handles whitepace and lineterminators (abc\\uFEFF)
-15.5.4.20-4-18: FAIL
-# Bug? String.prototype.trim handles whitepace and lineterminators
-#      (\\uFEFF\\uFEFF)
-15.5.4.20-4-34: FAIL
 # Bug? Date.prototype.toISOString - RangeError is thrown when value of date is
 #      Date(1970, 0, -99999999, 0, 0, 0, -1), the time zone is UTC(0)
 15.9.5.43-0-8: FAIL
 # Bug? Date.prototype.toISOString - RangeError is not thrown when value of date
 #      is Date(1970, 0, 100000001, 0, 0, 0, -1), the time zone is UTC(0)
 15.9.5.43-0-11: FAIL
 # Bug? Date.prototype.toISOString - RangeError is not thrown when value of date
 #      is Date(1970, 0, 100000001, 0, 0, 0, 0), the time zone is UTC(0)
 15.9.5.43-0-12: FAIL
 # Bug? Date.prototype.toISOString - RangeError is thrown when value of date is
@@ skipping 26 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