util-lib: split our string related calls from util.[ch] into its own file string-util.[ch]

There are more than enough calls doing string manipulations to deserve
its own files, hence do something about it.

This patch also sorts the #include blocks of all files that needed to be
updated, according to the sorting suggestions from CODING_STYLE. Since
pretty much every file needs our string manipulation functions this
effectively means that most files have sorted #include blocks now.

Also touches a few unrelated include files.

1 files changed, 16 insertions, 15 deletions

diff --git a/src/core/shutdown.c b/src/core/shutdown.c
index 27c581d9c1..33383a4b0b 100644
--- a/src/core/shutdown.c
+++ b/src/core/shutdown.c
@@ -19,31 +19,32 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <sys/mman.h>
-#include <sys/reboot.h>
-#include <linux/reboot.h>
-#include <sys/stat.h>
-#include <sys/mount.h>
 #include <errno.h>
-#include <unistd.h>
+#include <getopt.h>
+#include <linux/reboot.h>
 #include <signal.h>
 #include <stdbool.h>
 #include <stdlib.h>
-#include <getopt.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/reboot.h>
+#include <sys/stat.h>
+#include <unistd.h>
 
-#include "missing.h"
-#include "log.h"
+#include "cgroup-util.h"
+#include "def.h"
 #include "fileio.h"
+#include "killall.h"
+#include "log.h"
+#include "missing.h"
+#include "process-util.h"
+#include "string-util.h"
+#include "switch-root.h"
+#include "terminal-util.h"
 #include "umount.h"
 #include "util.h"
 #include "virt.h"
 #include "watchdog.h"
-#include "killall.h"
-#include "cgroup-util.h"
-#include "def.h"
-#include "switch-root.h"
-#include "process-util.h"
-#include "terminal-util.h"
 
 #define FINALIZE_ATTEMPTS 50