util-lib: split stat()/statfs()/stavfs() related calls into stat-util.[ch]

src/nspawn/nspawn-mount.c

@@ -33,6 +33,7 @@
 #include "path-util.h"
 #include "rm-rf.h"
 #include "set.h"
+#include "stat-util.h"
 #include "string-util.h"
 #include "strv.h"
 #include "util.h"

src/nspawn/nspawn-register.c

@@ -21,12 +21,12 @@
 
 #include "sd-bus.h"
 
-#include "util.h"
-#include "strv.h"
-#include "bus-util.h"
 #include "bus-error.h"
-
+#include "bus-util.h"
 #include "nspawn-register.h"
+#include "stat-util.h"
+#include "strv.h"
+#include "util.h"
 
 int register_machine(
                 const char *machine_name,

src/nspawn/nspawn.c

@@ -90,6 +90,7 @@
 #endif
 #include "signal-util.h"
 #include "socket-util.h"
+#include "stat-util.h"
 #include "string-util.h"
 #include "strv.h"
 #include "terminal-util.h"