[Isolates] Merge from bleeding_edge to isolates, revisions 6100-6300.

src/assembler.h

Index: src/assembler.h
===================================================================
--- src/assembler.h	(revision 6941)
+++ src/assembler.h	(working copy)
@@ -49,6 +49,7 @@
  public:
   static const double min_int;
   static const double one_half;
+  static const double minus_zero;
   static const double negative_infinity;
 };
 
@@ -511,6 +512,9 @@
   // Static variable Factory::the_hole_value.location()
   static ExternalReference the_hole_value_location();
 
+  // Static variable Factory::arguments_marker.location()
+  static ExternalReference arguments_marker_location();
+
   // Static variable Heap::roots_address()
   static ExternalReference roots_address();
 
@@ -551,6 +555,7 @@
   // Static variables containing common double constants.
   static ExternalReference address_of_min_int();
   static ExternalReference address_of_one_half();
+  static ExternalReference address_of_minus_zero();
   static ExternalReference address_of_negative_infinity();
 
   Address address() const {return reinterpret_cast<Address>(address_);}