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, 11 insertions, 10 deletions

diff --git a/src/shared/install.c b/src/shared/install.c
index 238433c808..5368623b74 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -21,23 +21,24 @@
 
 #include <errno.h>
 #include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
 #include <fnmatch.h>
+#include <string.h>
+#include <unistd.h>
 
-#include "util.h"
-#include "mkdir.h"
+#include "conf-files.h"
+#include "conf-parser.h"
 #include "hashmap.h"
-#include "set.h"
-#include "path-util.h"
+#include "install-printf.h"
+#include "mkdir.h"
 #include "path-lookup.h"
+#include "path-util.h"
+#include "set.h"
+#include "special.h"
+#include "string-util.h"
 #include "strv.h"
 #include "unit-name.h"
+#include "util.h"
 #include "install.h"
-#include "conf-parser.h"
-#include "conf-files.h"
-#include "install-printf.h"
-#include "special.h"
 
 typedef struct {
         OrderedHashmap *will_install;