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-netlink/test-netlink.c b/src/libsystemd/sd-netlink/test-netlink.c
index c9cb415ca0..419a28725f 100644
--- a/src/libsystemd/sd-netlink/test-netlink.c
+++ b/src/libsystemd/sd-netlink/test-netlink.c
@@ -19,16 +19,18 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <netinet/ether.h>
 #include <net/if.h>
+#include <netinet/ether.h>
 
-#include "util.h"
-#include "macro.h"
 #include "sd-netlink.h"
-#include "socket-util.h"
-#include "netlink-util.h"
+
 #include "event-util.h"
+#include "macro.h"
 #include "missing.h"
+#include "netlink-util.h"
+#include "socket-util.h"
+#include "string-util.h"
+#include "util.h"
 
 static void test_message_link_bridge(sd_netlink *rtnl) {
         _cleanup_netlink_message_unref_ sd_netlink_message *message = NULL;