[strong] Implement per-object restrictions behaviour of property freezing

src/messages.h

Index: src/messages.h
diff --git a/src/messages.h b/src/messages.h
index 75314e93f989fcd9d041f9679d4607d2b625bd11..70235bbd6ef83d93419a7a124e0b3030a3fa5541 100644
--- a/src/messages.h
+++ b/src/messages.h
@@ -227,6 +227,9 @@ class CallSite {
   T(StrongArity,                                                               \
     "In strong mode, calling a function with too few arguments is deprecated") \
   T(StrongImplicitCast, "In strong mode, implicit conversions are deprecated") \
+  T(StrongRedefineDisallowed,                                                  \
+    "On strong object %, redefining writable, non-configurable property '%' "  \
+    "to be non-writable is deprecated")                                        \
   T(SymbolKeyFor, "% is not a symbol")                                         \
   T(SymbolToPrimitive,                                                         \
     "Cannot convert a Symbol wrapper object to a primitive value")             \