I bet this speeds up the compilation

src/zfsaddhomedir.c

@@ -1,10 +1,6 @@
 #include <stdio.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <limits.h>
-#include <sys/stat.h>
 #include <sys/types.h>
-#include <fcntl.h>
+#include <unistd.h>
 #include <assert.h>
 #include "util.h"