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, 8 insertions, 6 deletions

diff --git a/src/libsystemd/sd-resolve/test-resolve.c b/src/libsystemd/sd-resolve/test-resolve.c
index e8056529f5..87e6e47041 100644
--- a/src/libsystemd/sd-resolve/test-resolve.c
+++ b/src/libsystemd/sd-resolve/test-resolve.c
@@ -20,18 +20,20 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <string.h>
-#include <sys/socket.h>
 #include <arpa/inet.h>
-#include <stdio.h>
+#include <errno.h>
 #include <netinet/in.h>
 #include <resolv.h>
-#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
 
-#include "socket-util.h"
 #include "sd-resolve.h"
-#include "resolve-util.h"
+
 #include "macro.h"
+#include "resolve-util.h"
+#include "socket-util.h"
+#include "string-util.h"
 
 static int getaddrinfo_handler(sd_resolve_query *q, int ret, const struct addrinfo *ai, void *userdata) {
         const struct addrinfo *i;