Rename formats-util.h to format-util.h

We don't have plural in the name of any other -util files and this
inconsistency trips me up every time I try to type this file name
from memory. "formats-util" is even hard to pronounce.

src/core/automount.c

@@ -34,7 +34,7 @@
 #include "bus-util.h"
 #include "dbus-automount.h"
 #include "fd-util.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "io-util.h"
 #include "label.h"
 #include "mkdir.h"

src/core/busname.c

@@ -27,7 +27,7 @@
 #include "busname.h"
 #include "dbus-busname.h"
 #include "fd-util.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "kdbus.h"
 #include "parse-util.h"
 #include "process-util.h"

src/core/dbus-manager.c

@@ -34,7 +34,7 @@
 #include "env-util.h"
 #include "fd-util.h"
 #include "fileio.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "install.h"
 #include "log.h"
 #include "path-util.h"

src/core/execute.c

@@ -71,7 +71,7 @@
 #include "exit-status.h"
 #include "fd-util.h"
 #include "fileio.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "fs-util.h"
 #include "glob-util.h"
 #include "io-util.h"

src/core/killall.c

@@ -25,7 +25,7 @@
 #include "alloc-util.h"
 #include "def.h"
 #include "fd-util.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "killall.h"
 #include "parse-util.h"
 #include "process-util.h"

src/core/main.c

@@ -53,7 +53,7 @@
 #include "fd-util.h"
 #include "fdset.h"
 #include "fileio.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "fs-util.h"
 #include "hostname-setup.h"
 #include "ima-setup.h"

src/core/mount.c

@@ -28,7 +28,7 @@
 #include "dbus-mount.h"
 #include "escape.h"
 #include "exit-status.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "fstab-util.h"
 #include "log.h"
 #include "manager.h"

src/core/service.c

@@ -33,7 +33,7 @@
 #include "exit-status.h"
 #include "fd-util.h"
 #include "fileio.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "fs-util.h"
 #include "load-dropin.h"
 #include "load-fragment.h"

src/core/socket.c

@@ -36,7 +36,7 @@
 #include "def.h"
 #include "exit-status.h"
 #include "fd-util.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "io-util.h"
 #include "label.h"
 #include "log.h"

src/core/swap.c

@@ -29,7 +29,7 @@
 #include "escape.h"
 #include "exit-status.h"
 #include "fd-util.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "fstab-util.h"
 #include "parse-util.h"
 #include "path-util.h"

src/core/unit-printf.c

@@ -19,7 +19,7 @@
 
 #include "alloc-util.h"
 #include "cgroup-util.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "macro.h"
 #include "specifier.h"
 #include "string-util.h"

src/core/unit.c

@@ -36,7 +36,7 @@
 #include "escape.h"
 #include "execute.h"
 #include "fileio-label.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "id128-util.h"
 #include "load-dropin.h"
 #include "load-fragment.h"