Push version 2.1.2.6 to trunk. This add the IsExecutionTerminating...

include/v8.h

Index: include/v8.h
===================================================================
--- include/v8.h	(revision 4029)
+++ include/v8.h	(working copy)
@@ -2442,6 +2442,16 @@
   static void TerminateExecution();
 
   /**
+   * Is V8 terminating JavaScript execution.
+   *
+   * Returns true if JavaScript execution is currently terminating
+   * because of a call to TerminateExecution.  In that case there are
+   * still JavaScript frames on the stack and the termination
+   * exception is still active.
+   */
+  static bool IsExecutionTerminating();
+
+  /**
    * Releases any resources used by v8 and stops any utility threads
    * that may be running.  Note that disposing v8 is permanent, it
    * cannot be reinitialized.