Prepare push to trunk. Now working on version 3.17.7.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/12386022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13778 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2013-02-28: Version 3.17.6
+
+        Fixed materialization of arguments objects with unknown values.
+        (Chromium issue 163530)
+
+        Set default number of sweeper threads to at most four.
+
+        Performance and stability improvements on all platforms.
+
+
 2013-02-27: Version 3.17.5
 
         Made __proto__ a foreign callback on Object.prototype.

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     17
-#define BUILD_NUMBER      6
+#define BUILD_NUMBER      7
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)