Roll V8 back to 3.6

Roll back to V8 3.6 to fix x86 build, we don't have ucontext.h.

This reverts commits:
5d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0b
c7cc028aaeedbbfa11c11d0b7b243b3d9e837ed9
592a9fc1d8ea420377a2e7efd0600e20b058be2b

Bug: 5688872
Change-Id: Ic961bb5e65b778e98bbfb71cce71d99fa949e995
diff --git a/test/mjsunit/string-slices-regexp.js b/test/mjsunit/string-slices-regexp.js
index 98b8ef9..a8cadae 100644
--- a/test/mjsunit/string-slices-regexp.js
+++ b/test/mjsunit/string-slices-regexp.js
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2009 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:
@@ -24,6 +24,11 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Flags: --string-slices
+
+//assertEquals('345"12345 6"1234567"123',
+//             '12345""12345 6""1234567""1234'.slice(2,-1).replace(/""/g, '"'));
 
 var foo = "lsdfj sldkfj sdklfj læsdfjl sdkfjlsdk fjsdl fjsdljskdj flsj flsdkj flskd regexp: /foobar/\nldkfj sdlkfj sdkl";
 for(var i = 0; i < 1000; i++) {