Added unique id to all scripts

src/factory.cc

Index: src/factory.cc
===================================================================
--- src/factory.cc	(revision 1464)
+++ src/factory.cc	(working copy)
@@ -153,9 +153,12 @@
 
 
 Handle<Script> Factory::NewScript(Handle<String> source) {
+  static uint32_t next_id = 1;
+
   Handle<Script> script = Handle<Script>::cast(NewStruct(SCRIPT_TYPE));
   script->set_source(*source);
   script->set_name(Heap::undefined_value());
+  script->set_id(*Factory::NewNumberFromUint(next_id++));
   script->set_line_offset(Smi::FromInt(0));
   script->set_column_offset(Smi::FromInt(0));
   script->set_type(Smi::FromInt(SCRIPT_TYPE_NORMAL));
@@ -277,6 +280,11 @@
 }
 
 
+Handle<Object> Factory::NewNumberFromUint(uint32_t value) {
+  CALL_HEAP_FUNCTION(Heap::NumberFromUint32(value), Object);
+}
+
+
 Handle<JSObject> Factory::NewNeanderObject() {
   CALL_HEAP_FUNCTION(Heap::AllocateJSObjectFromMap(Heap::neander_map()),
                      JSObject);