add comments for diet.h (auto-gen from Makefile)
diff --git a/Makefile b/Makefile
index f443c46..5dfb96c 100644
--- a/Makefile
+++ b/Makefile
@@ -148,14 +148,16 @@
 
 # generate include/diet.h
 diet:
-	@echo "#ifndef CAPSTONE_DIET_H" > include/diet.h
+	@echo "// File auto-generated by Makefile for Capstone framework. DO NOT MODIFY!" > include/diet.h
+	@echo "#ifndef CAPSTONE_DIET_H" >> include/diet.h
 	@echo "#define CAPSTONE_DIET_H" >> include/diet.h
 	@echo "" >> include/diet.h
-	@echo "// File auto-generated by Makefile for Capstone framework. DO NOT MODIFY!" >> include/diet.h
 	@echo "" >> include/diet.h
 ifneq (,$(findstring yes,$(CAPSTONE_DIET)))
+	@echo "// Capstone is in DIET mode" >> include/diet.h
 	@echo "#define CAPSTONE_DIET" >> include/diet.h
 else
+	@echo "// Capstone is in standard mode (NOT diet)" >> include/diet.h
 	@echo "#undef CAPSTONE_DIET" >> include/diet.h
 endif
 	@echo "" >> include/diet.h