Kill constants.h and fix some copyright headers.

Change-Id: I51c04d731d6de035328781d8ac134ad6fcf49897
diff --git a/src/runtime.h b/src/runtime.h
index 36dd5c6..b8fe35a 100644
--- a/src/runtime.h
+++ b/src/runtime.h
@@ -27,8 +27,8 @@
 
 #include <jni.h>
 
-#include "constants.h"
 #include "heap.h"
+#include "instruction_set.h"
 #include "globals.h"
 #include "macros.h"
 #include "runtime_stats.h"