Switch to old JIT

Change-Id: Idab52012834d1292140be3d5d7e058ee5a2c83d5
diff --git a/Config.h b/Config.h
index 521fa4c..1cf62ec 100644
--- a/Config.h
+++ b/Config.h
@@ -4,8 +4,8 @@
 //---------------------------------------------------------------------------
 // Configuration for JIT & MC Assembler
 //---------------------------------------------------------------------------
-#define USE_OLD_JIT 0
-#define USE_MCJIT 1
+#define USE_OLD_JIT 1
+#define USE_MCJIT 0
 
 #if !USE_OLD_JIT && !USE_MCJIT
 #error "You should choose at least one code generation method."