Our old toolchain doesn't have utmpx.h, we suck.

--- a/toys.h
+++ b/toys.h
@@ -47,7 +47,9 @@
 #include <time.h>
 #include <unistd.h>
 #include <utime.h>
+#if 0
 #include <utmpx.h>
+#endif
 
 // Internationalization support