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, 6 insertions, 4 deletions

diff --git a/src/bus-proxyd/test-bus-xml-policy.c b/src/bus-proxyd/test-bus-xml-policy.c
index d19d0e1b60..cb7ff6b970 100644
--- a/src/bus-proxyd/test-bus-xml-policy.c
+++ b/src/bus-proxyd/test-bus-xml-policy.c
@@ -19,15 +19,17 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <unistd.h>
 #include <errno.h>
 #include <stddef.h>
+#include <unistd.h>
 
-#include "log.h"
-#include "util.h"
 #include "sd-bus.h"
-#include "strv.h"
+
 #include "bus-xml-policy.h"
+#include "log.h"
+#include "string-util.h"
+#include "strv.h"
+#include "util.h"
 
 static int test_policy_load(Policy *p, const char *name) {
         _cleanup_free_ char *path = NULL;