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, 7 deletions

diff --git a/src/basic/conf-files.c b/src/basic/conf-files.c
index da8745b284..0e44d1bbad 100644
--- a/src/basic/conf-files.c
+++ b/src/basic/conf-files.c
@@ -19,19 +19,20 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <string.h>
+#include <dirent.h>
 #include <errno.h>
-#include <stdlib.h>
 #include <stdio.h>
-#include <dirent.h>
+#include <stdlib.h>
+#include <string.h>
 
+#include "hashmap.h"
+#include "log.h"
 #include "macro.h"
-#include "util.h"
 #include "missing.h"
-#include "log.h"
-#include "strv.h"
 #include "path-util.h"
-#include "hashmap.h"
+#include "string-util.h"
+#include "strv.h"
+#include "util.h"
 #include "conf-files.h"
 
 static int files_add(Hashmap *h, const char *root, const char *path, const char *suffix) {