tree-wide: sort includes

Sort the includes accoding to the new coding style.

src/journal/lookup3.c

@@ -40,10 +40,10 @@ on 1 byte), but shoehorning those bytes into integers efficiently is messy.
 */
 /* #define SELF_TEST 1 */
 
-#include <stdio.h>      /* defines printf for tests */
-#include <time.h>       /* defines time_t for timings in the test */
 #include <stdint.h>     /* defines uint32_t etc */
+#include <stdio.h>      /* defines printf for tests */
 #include <sys/param.h>  /* attempt to define endianness */
+#include <time.h>       /* defines time_t for timings in the test */
 #ifdef linux
 # include <endian.h>    /* attempt to define endianness */
 #endif