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, 13 insertions, 11 deletions

diff --git a/src/import/pull-dkr.c b/src/import/pull-dkr.c
index 84211d282b..ea31d11641 100644
--- a/src/import/pull-dkr.c
+++ b/src/import/pull-dkr.c
@@ -23,22 +23,24 @@
 #include <sys/prctl.h>
 
 #include "sd-daemon.h"
-#include "json.h"
-#include "strv.h"
+
+#include "aufs-util.h"
 #include "btrfs-util.h"
-#include "utf8.h"
+#include "curl-util.h"
+#include "hostname-util.h"
+#include "import-common.h"
+#include "import-util.h"
+#include "json.h"
 #include "mkdir.h"
-#include "rm-rf.h"
 #include "path-util.h"
-#include "import-util.h"
-#include "curl-util.h"
-#include "aufs-util.h"
-#include "pull-job.h"
+#include "process-util.h"
 #include "pull-common.h"
-#include "import-common.h"
 #include "pull-dkr.h"
-#include "process-util.h"
-#include "hostname-util.h"
+#include "pull-job.h"
+#include "rm-rf.h"
+#include "string-util.h"
+#include "strv.h"
+#include "utf8.h"
 
 typedef enum DkrProgress {
         DKR_SEARCHING,