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, 7 insertions, 6 deletions

diff --git a/src/shared/cgroup-show.c b/src/shared/cgroup-show.c
index 31b4f6c684..57b7aeb228 100644
--- a/src/shared/cgroup-show.c
+++ b/src/shared/cgroup-show.c
@@ -19,19 +19,20 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <stdio.h>
-#include <string.h>
 #include <dirent.h>
 #include <errno.h>
+#include <stdio.h>
+#include <string.h>
 
-#include "util.h"
+#include "cgroup-util.h"
 #include "formats-util.h"
-#include "process-util.h"
 #include "macro.h"
 #include "path-util.h"
-#include "cgroup-util.h"
-#include "cgroup-show.h"
+#include "process-util.h"
+#include "string-util.h"
 #include "terminal-util.h"
+#include "util.h"
+#include "cgroup-show.h"
 
 static int compare(const void *a, const void *b) {
         const pid_t *p = a, *q = b;