Introduce ENABLE_LATIN_1 compile flag

test/mjsunit/regress/regress-latin-1.js

Index: test/mjsunit/regress/regress-latin-1.js
diff --git a/test/message/overwritten-builtins.js b/test/mjsunit/regress/regress-latin-1.js
similarity index 88%
copy from test/message/overwritten-builtins.js
copy to test/mjsunit/regress/regress-latin-1.js
index 8a838de1dd4460c1ef6f31c618698ce1063a01b5..3731f75188ac9311c739f6b119a936c47fb09204 100644
--- a/test/message/overwritten-builtins.js
+++ b/test/mjsunit/regress/regress-latin-1.js
@@ -1,4 +1,4 @@
-// Copyright 2009 the V8 project authors. All rights reserved.
+// Copyright 2013 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:
@@ -25,7 +25,5 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-String.prototype.split = function() { return "SPLIT ERROR"; };
-Array.prototype.join = function() { return []; };
-
-undefined.x
+assertEquals(String.fromCharCode(97, 220, 256), 'a' + '\u00DC' + '\u0100');
+assertEquals(String.fromCharCode(97, 220, 256), 'a\u00DC\u0100');