Remove the different length string types...

src/runtime.cc

Index: src/runtime.cc
===================================================================
--- src/runtime.cc	(revision 3336)
+++ src/runtime.cc	(working copy)
@@ -3762,6 +3762,7 @@
   ASSERT(args.length() == 2);
   CONVERT_CHECKED(String, str1, args[0]);
   CONVERT_CHECKED(String, str2, args[1]);
+  Counters::cons_strings_runtime.Increment();
   return Heap::AllocateConsString(str1, str2);
 }
 
@@ -4987,6 +4988,9 @@
     PrintF("DebugPrint: ");
   }
   args[0]->Print();
+  if (args[0]->IsHeapObject()) {
+    HeapObject::cast(args[0])->map()->Print();
+  }
 #else
   // ShortPrint is available in release mode. Print is not.
   args[0]->ShortPrint();