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, 5 deletions

diff --git a/src/libsystemd/sd-network/sd-network.c b/src/libsystemd/sd-network/sd-network.c
index 87d87359b8..d330712aaf 100644
--- a/src/libsystemd/sd-network/sd-network.c
+++ b/src/libsystemd/sd-network/sd-network.c
@@ -20,16 +20,18 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <string.h>
 #include <errno.h>
-#include <sys/inotify.h>
 #include <poll.h>
+#include <string.h>
+#include <sys/inotify.h>
 
-#include "util.h"
+#include "sd-network.h"
+
+#include "fileio.h"
 #include "macro.h"
+#include "string-util.h"
 #include "strv.h"
-#include "fileio.h"
-#include "sd-network.h"
+#include "util.h"
 
 _public_ int sd_network_get_operational_state(char **state) {
         _cleanup_free_ char *s = NULL;