Replace use of deprecated C Standard library headers in C++ code.

Change-Id: I9fa6630c7e4bdb2897df34d417635d8c7d8253bc
Signed-off-by: Tyler Chatow <tchatow@gmail.com>
diff --git a/frc971/wpilib/ahal/Utility.h b/frc971/wpilib/ahal/Utility.h
index be8dc35..196dfce 100644
--- a/frc971/wpilib/ahal/Utility.h
+++ b/frc971/wpilib/ahal/Utility.h
@@ -11,8 +11,7 @@
  * Contains global utility functions
  */
 
-#include <stdint.h>
-
+#include <cstdint>
 #include <string>
 
 #include "wpi/StringRef.h"