Needed by util-linux.

diff -u -r /home/fornwall/lib/android-ndk/platforms/android-21/arch-arm/usr/include/sys/ttydefaults.h ./usr/include/sys/ttydefaults.h
--- /home/fornwall/lib/android-ndk/platforms/android-21/arch-arm/usr/include/sys/ttydefaults.h	2016-06-01 12:53:26.000000000 -0400
+++ ./usr/include/sys/ttydefaults.h	2016-06-22 06:29:26.247578626 -0400
@@ -46,7 +46,7 @@
  * Defaults on "first" open.
  */
 #define	TTYDEF_IFLAG	(BRKINT | ICRNL | IMAXBEL | IXON | IXANY)
-#define TTYDEF_OFLAG	(OPOST | ONLCR | OXTABS)
+#define TTYDEF_OFLAG	(OPOST | ONLCR | XTABS)
 #define TTYDEF_LFLAG	(ECHO | ICANON | ISIG | IEXTEN | ECHOE|ECHOKE|ECHOCTL)
 #define TTYDEF_CFLAG	(CREAD | CS8 | HUPCL)
 #define TTYDEF_SPEED	(B9600)