deps: upgrade to V8 4.9.385.18

Pick up the current branch head for V8 4.9
v8/v8@1ecba0f

PR-URL: #4722
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>

deps/v8/.gitignore

@@ -25,6 +25,7 @@
 .cproject
 .d8_history
 .gclient_entries
+.gdb_history
 .landmines
 .project
 .pydevproject
@@ -39,6 +40,7 @@ gcsuspects
 shell
 shell_g
 /_*
+/base/trace_event/common
 /build/Debug
 /build/gyp
 /build/ipch/

deps/v8/AUTHORS

@@ -32,6 +32,7 @@ StrongLoop, Inc. <*@strongloop.com>
 Aaron Bieber <deftly@gmail.com>
 Abdulla Kamar <abdulla.kamar@gmail.com>
 Akinori MUSHA <knu@FreeBSD.org>
+Alex Kodat <akodat@rocketsoftware.com>
 Alexander Botero-Lowry <alexbl@FreeBSD.org>
 Alexander Karpinsky <homm86@gmail.com>
 Alexandre Vassalotti <avassalotti@gmail.com>
@@ -51,6 +52,7 @@ Daniel James <dnljms@gmail.com>
 Douglas Crosher <dtc-v8@scieneer.com>
 Dusan Milosavljevic <dusan.m.milosavljevic@gmail.com>
 Erich Ocean <erich.ocean@me.com>
+Evan Lucas <evan.lucas@help.com>
 Fedor Indutny <fedor@indutny.com>
 Felix Geisendörfer <haimuiba@gmail.com>
 Filipe David Manana <fdmanana@gmail.com>
@@ -102,7 +104,8 @@ Stefan Penner <stefan.penner@gmail.com>
 Tobias Burnus <burnus@net-b.de>
 Victor Costan <costan@gmail.com>
 Vlad Burlik <vladbph@gmail.com>
+Vladimir Krivosheev <develar@gmail.com>
 Vladimir Shutoff <vovan@shutoff.ru>
 Yu Yin <xwafish@gmail.com>
 Zhongping Wang <kewpie.w.zp@gmail.com>
-柳荣一 <admin@web-tinker.com>
+柳荣一 <admin@web-tinker.com>