Move files related to compiled code into oat/ directory

Test: art/test.py -b --host
Change-Id: Icedd3a82c6bca5147c3bc9dc50de5a729003d66f
diff --git a/runtime/class_loader_context.h b/runtime/class_loader_context.h
index 806ab5e..cfb0457 100644
--- a/runtime/class_loader_context.h
+++ b/runtime/class_loader_context.h
@@ -26,7 +26,7 @@
 #include "dex/dex_file.h"
 #include "handle_scope.h"
 #include "mirror/class_loader.h"
-#include "oat_file.h"
+#include "oat/oat_file.h"
 #include "scoped_thread_state_change.h"
 
 namespace art {