Function movements

* string functions mstr*() are moved to string_utils.c
* allocation wrappers are moved to utils.h
* printf_* functions are moved to log.h

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>

src/config.c

@@ -6,9 +6,11 @@
 #include <stdbool.h>
 
 #include "common.h"
-#include "config.h"
 #include "utils.h"
 #include "c2.h"
+#include "string_utils.h"
+
+#include "config.h"
 
 /**
  * Parse a long number.