radical re-formatting 0/3: Alphabetic headers

Except stated otherwise in comment.

Fixes coding style. Formatting commits suck, incoherent coding style
sucks more.
https://suckless.org/coding_style/

components/kernel_release.c

@@ -1,9 +1,9 @@
 /* See LICENSE file for copyright and license details. */
-#include <sys/utsname.h>
 #include <stdio.h>
+#include <sys/utsname.h>
 
-#include "../util.h"
 #include "../slstatus.h"
+#include "../util.h"
 
 const char *
 kernel_release(const char *unused)