probe for getspnam(), forkpty(), utmpx, replace sethostname()
Android is missing all of these; we need to probe for some so we have
a config symbol to depend on.
sethostname() is easily replaced.
We got termios.h via pty.h; now it's not included in configure-step tools,
so we need termios.h to generate globals.
diff --git a/toys.h b/toys.h
index ed1fa81..6b5f87a 100644
--- a/toys.h
+++ b/toys.h
@@ -41,10 +41,10 @@
#include <sys/utsname.h>
#include <sys/wait.h>
#include <syslog.h>
+#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <utime.h>
-#include <utmpx.h>
// Posix networking
@@ -64,7 +64,6 @@
#include <wctype.h>
// LSB 4.1 headers
-#include <pty.h>
#include <sys/ioctl.h>
#include <sys/statfs.h>
#include <sys/sysinfo.h>