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/test/test-netlink-manual.c b/src/test/test-netlink-manual.c
index 2879d7450f..a1e8774063 100644
--- a/src/test/test-netlink-manual.c
+++ b/src/test/test-netlink-manual.c
@@ -20,15 +20,16 @@
 ***/
 
 #include <arpa/inet.h>
-#include <net/if.h>
+#include <libkmod.h>
 #include <linux/ip.h>
+#include <net/if.h>
 #include <linux/if_tunnel.h>
-#include <libkmod.h>
 
-#include "util.h"
-#include "macro.h"
 #include "sd-netlink.h"
 
+#include "macro.h"
+#include "util.h"
+
 static int load_module(const char *mod_name) {
         struct kmod_ctx *ctx;
         struct kmod_list *list = NULL, *l;