Use ICU for ID_START and ID_CONTINUE for Unicode 9 data

test/webkit/ToNumber.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 // 1.  Redistributions of source code must retain the above copyright
 //     notice, this list of conditions and the following disclaimer.
 // 2.  Redistributions in binary form must reproduce the above copyright
 //     notice, this list of conditions and the following disclaimer in the
@@ skipping 87 matching lines @@
 shouldBe("+'1E1'", "10");
 shouldBe("+tab", "0");
 shouldBe("+nbsp", "0");
 shouldBe("+ff", "0");
 shouldBe("+vt", "0");
 shouldBe("+cr", "0");
 shouldBe("+lf", "0");
 shouldBe("+ls", "0");
 shouldBe("+ps", "0");
 shouldBe("+oghamSpaceMark", "0");
-shouldBe("+mongolianVowelSeparator", "0");
+shouldBe("+mongolianVowelSeparator", "NaN");
 shouldBe("+enQuad", "0");
 shouldBe("+emQuad", "0");
 shouldBe("+enSpace", "0");
 shouldBe("+emSpace", "0");
 shouldBe("+threePerEmSpace", "0");
 shouldBe("+fourPerEmSpace", "0");
 shouldBe("+sixPerEmSpace", "0");
 shouldBe("+figureSpace", "0");
 shouldBe("+punctuationSpace", "0");
 shouldBe("+thinSpace", "0");
 shouldBe("+hairSpace", "0");
 shouldBe("+narrowNoBreakSpace", "0");
 shouldBe("+mediumMathematicalSpace", "0");
 shouldBe("+ideographicSpace", "0");
 shouldBe("+(tab + '1')", "1");
 shouldBe("+(nbsp + '1')", "1");
 shouldBe("+(ff + '1')", "1");
 shouldBe("+(vt + '1')", "1");
 shouldBe("+(cr + '1')", "1");
 shouldBe("+(lf + '1')", "1");
 shouldBe("+(ls + '1')", "1");
 shouldBe("+(ps + '1')", "1");
 shouldBe("+(oghamSpaceMark + '1')", "1");
-shouldBe("+(mongolianVowelSeparator + '1')", "1");
+shouldBe("+(mongolianVowelSeparator + '1')", "NaN");
 shouldBe("+(enQuad + '1')", "1");
 shouldBe("+(emQuad + '1')", "1");
 shouldBe("+(enSpace + '1')", "1");
 shouldBe("+(emSpace + '1')", "1");
 shouldBe("+(threePerEmSpace + '1')", "1");
 shouldBe("+(fourPerEmSpace + '1')", "1");
 shouldBe("+(sixPerEmSpace + '1')", "1");
 shouldBe("+(figureSpace + '1')", "1");
 shouldBe("+(punctuationSpace + '1')", "1");
 shouldBe("+(thinSpace + '1')", "1");
 shouldBe("+(hairSpace + '1')", "1");
 shouldBe("+(narrowNoBreakSpace + '1')", "1");
 shouldBe("+(mediumMathematicalSpace + '1')", "1");
 shouldBe("+(ideographicSpace + '1')", "1");
 shouldBe("+('1' + tab)", "1");
 shouldBe("+('1' + nbsp)", "1");
 shouldBe("+('1' + ff)", "1");
 shouldBe("+('1' + vt)", "1");
 shouldBe("+('1' + cr)", "1");
 shouldBe("+('1' + lf)", "1");
 shouldBe("+('1' + ls)", "1");
 shouldBe("+('1' + ps)", "1");
 shouldBe("+('1' + oghamSpaceMark)", "1");
-shouldBe("+('1' + mongolianVowelSeparator)", "1");
+shouldBe("+('1' + mongolianVowelSeparator)", "NaN");
 shouldBe("+('1' + enQuad)", "1");
 shouldBe("+('1' + emQuad)", "1");
 shouldBe("+('1' + enSpace)", "1");
 shouldBe("+('1' + emSpace)", "1");
 shouldBe("+('1' + threePerEmSpace)", "1");
 shouldBe("+('1' + fourPerEmSpace)", "1");
 shouldBe("+('1' + sixPerEmSpace)", "1");
 shouldBe("+('1' + figureSpace)", "1");
 shouldBe("+('1' + punctuationSpace)", "1");
 shouldBe("+('1' + thinSpace)", "1");
@@ skipping 18 matching lines @@
 shouldBe("+('1' + threePerEmSpace + '1')", "NaN");
 shouldBe("+('1' + fourPerEmSpace + '1')", "NaN");
 shouldBe("+('1' + sixPerEmSpace + '1')", "NaN");
 shouldBe("+('1' + figureSpace + '1')", "NaN");
 shouldBe("+('1' + punctuationSpace + '1')", "NaN");
 shouldBe("+('1' + thinSpace + '1')", "NaN");
 shouldBe("+('1' + hairSpace + '1')", "NaN");
 shouldBe("+('1' + narrowNoBreakSpace + '1')", "NaN");
 shouldBe("+('1' + mediumMathematicalSpace + '1')", "NaN");
 shouldBe("+('1' + ideographicSpace + '1')", "NaN");