tree-wide: sort includes

Sort the includes accoding to the new coding style.

src/basic/errno-list.c

@@ -21,14 +21,14 @@
 
 #include <string.h>
 
-#include "util.h"
 #include "errno-list.h"
+#include "util.h"
 
 static const struct errno_name* lookup_errno(register const char *str,
                                                  register unsigned int len);
 
-#include "errno-to-name.h"
 #include "errno-from-name.h"
+#include "errno-to-name.h"
 
 const char *errno_to_name(int id) {