chakrashim: more v8.h shim alignment for nan.h

Changes to make latest nan.h work:
* Add v8-version.h to enable v8 header version detection.
* Add missing methods referenced in nan.h.
* Support Persistent::SetWeak with WeakCallbackInfo partially.

Fix a bug in Integer::NewFromUnsigned. Was handling big values incorrectly.

Reviewed-by: @kunalspathak

deps/chakrashim/chakrashim.gyp

@@ -56,6 +56,7 @@
       'include/v8-debug.h',
       'include/v8-platform.h',
       'include/v8-profiler.h',
+      'include/v8-version.h',
       'src/jsrtcachedpropertyidref.inc',
       'src/jsrtcontextcachedobj.inc',
       'src/jsrtcontextshim.cc',

deps/chakrashim/include/v8-version.h

@@ -0,0 +1,43 @@
+// Copyright 2015 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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// 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.
+
+#ifndef V8_INCLUDE_VERSION_H_  // V8_VERSION_H_ conflicts with src/version.h
+#define V8_INCLUDE_VERSION_H_
+
+// These macros define the version number for the current version.
+// NOTE these macros are used by some of the tool scripts and the build
+// system so their names cannot be changed without changing the scripts.
+#define V8_MAJOR_VERSION 4
+#define V8_MINOR_VERSION 4
+#define V8_BUILD_NUMBER 63
+#define V8_PATCH_LEVEL 26
+
+// Use 1 for candidates and 0 otherwise.
+// (Boolean macro values are not supported by all preprocessors.)
+#define V8_IS_CANDIDATE_VERSION 0
+
+#endif  // V8_INCLUDE_VERSION_H_