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, 11 insertions, 10 deletions

diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c
index 1e34cbc2f5..49a45811a6 100644
--- a/src/udev/udev-event.c
+++ b/src/udev/udev-event.c
@@ -15,26 +15,27 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdlib.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
 #include <ctype.h>
-#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
 #include <net/if.h>
-#include <sys/prctl.h>
 #include <poll.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include <sys/epoll.h>
-#include <sys/wait.h>
+#include <sys/prctl.h>
 #include <sys/signalfd.h>
+#include <sys/wait.h>
+#include <unistd.h>
 
-#include "netlink-util.h"
 #include "event-util.h"
 #include "formats-util.h"
+#include "netlink-util.h"
 #include "process-util.h"
 #include "signal-util.h"
+#include "string-util.h"
 #include "udev.h"
 
 typedef struct Spawn {