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, 5 insertions, 4 deletions

diff --git a/src/core/unit-printf.c b/src/core/unit-printf.c
index 0889769d03..0b7fd4e25b 100644
--- a/src/core/unit-printf.c
+++ b/src/core/unit-printf.c
@@ -19,14 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include "unit.h"
+#include "cgroup-util.h"
+#include "formats-util.h"
+#include "macro.h"
 #include "specifier.h"
+#include "string-util.h"
 #include "strv.h"
 #include "unit-name.h"
+#include "unit.h"
 #include "unit-printf.h"
-#include "macro.h"
-#include "cgroup-util.h"
-#include "formats-util.h"
 
 static int specifier_prefix_and_instance(char specifier, void *data, void *userdata, char **ret) {
         Unit *u = userdata;