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, 1 insertions, 1 deletions

diff --git a/src/core/swap.h b/src/core/swap.h
index 7f29603c32..303b926568 100644
--- a/src/core/swap.h
+++ b/src/core/swap.h
@@ -22,7 +22,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <libudev.h>
+#include "libudev.h"
 
 typedef struct Swap Swap;