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, 10 insertions, 9 deletions

diff --git a/src/core/path.c b/src/core/path.c
index 081ac2040d..4d276a79db 100644
--- a/src/core/path.c
+++ b/src/core/path.c
@@ -19,20 +19,21 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <sys/inotify.h>
-#include <sys/epoll.h>
 #include <errno.h>
+#include <sys/epoll.h>
+#include <sys/inotify.h>
 #include <unistd.h>
 
-#include "unit.h"
-#include "unit-name.h"
-#include "path.h"
-#include "mkdir.h"
+#include "bus-error.h"
+#include "bus-util.h"
 #include "dbus-path.h"
-#include "special.h"
 #include "macro.h"
-#include "bus-util.h"
-#include "bus-error.h"
+#include "mkdir.h"
+#include "special.h"
+#include "string-util.h"
+#include "unit-name.h"
+#include "unit.h"
+#include "path.h"
 
 static const UnitActiveState state_translation_table[_PATH_STATE_MAX] = {
         [PATH_DEAD] = UNIT_INACTIVE,