Fix RegExp white-space character class to match BOMs.

test/mjsunit/regexp.js

Index: test/mjsunit/regexp.js
diff --git a/test/mjsunit/regexp.js b/test/mjsunit/regexp.js
index 3c4f883bdc1503dcf0fcd3ac651471279176075a..76fa44be9c064ca7a8283d28c9334e2b51a860e8 100644
--- a/test/mjsunit/regexp.js
+++ b/test/mjsunit/regexp.js
@@ -127,6 +127,17 @@ assertTrue(re.test("$"));
 
 assertTrue(/^[Z-\c-e]*$/.test("Z[\\cde"));
 
+// Test that we handle \s and \S correctly on special Unicode characters.
+re = /\s/;
+assertTrue(re.test("\u2028"));
+assertTrue(re.test("\u2029"));
+assertTrue(re.test("\uFEFF"));
+
+re = /\S/;
+assertFalse(re.test("\u2028"));
+assertFalse(re.test("\u2029"));
+assertFalse(re.test("\uFEFF"));
+
 // Test that we handle \s and \S correctly inside some bizarre
 // character classes.
 re = /[\s-:]/;