c99 bool support

Change-Id: I0990425a9362d3ef6ea0b40bf6f00fcc10eed426
diff --git a/scriptc/rs_types.rsh b/scriptc/rs_types.rsh
index 0f8717f..a010096 100644
--- a/scriptc/rs_types.rsh
+++ b/scriptc/rs_types.rsh
@@ -3,12 +3,7 @@
 
 #define M_PI        3.14159265358979323846264338327950288f   /* pi */
 
-//#include "external/clang/lib/Headers/stdbool.h"
-#define bool _Bool
-#define true 1
-#define false 0
-#define __bool_true_false_are_defined 1
-
+#include "stdbool.h"
 typedef char int8_t;
 typedef short int16_t;
 typedef int int32_t;