Reland "Compilation type and state allocate an unnecessary Smi on v8::Script" (r15940).

src/liveedit.cc

Index: src/liveedit.cc
diff --git a/src/liveedit.cc b/src/liveedit.cc
index bab2e101bc22d7a6ca5e39082ff0cbe0eac4155a..859cf2b94f34bd61e28afb185eb40f6c04d2f8bd 100644
--- a/src/liveedit.cc
+++ b/src/liveedit.cc
@@ -1557,11 +1557,14 @@ static Handle<Script> CreateScriptCopy(Handle<Script> original) {
   copy->set_data(original->data());
   copy->set_type(original->type());
   copy->set_context_data(original->context_data());
-  copy->set_compilation_type(original->compilation_type());
   copy->set_eval_from_shared(original->eval_from_shared());
   copy->set_eval_from_instructions_offset(
       original->eval_from_instructions_offset());
 
+  // Copy all the flags, but clear compilation state.
+  copy->set_flags(original->flags());
+  copy->set_compilation_state(Script::COMPILATION_STATE_INITIAL);
+
   return copy;
 }