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/aos/logging/implementations.h b/aos/logging/implementations.h
index bcce421..de1a8dd 100644
--- a/aos/logging/implementations.h
+++ b/aos/logging/implementations.h
@@ -1,15 +1,15 @@
 #ifndef AOS_LOGGING_IMPLEMENTATIONS_H_
 #define AOS_LOGGING_IMPLEMENTATIONS_H_
 
-#include <limits.h>
-#include <stdarg.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include <atomic>
+#include <climits>
+#include <cstdarg>
+#include <cstdint>
+#include <cstdio>
+#include <cstring>
 #include <functional>
 #include <memory>
 #include <string>