off.
This makes three changes: adds the ht capability to the standard lines
in gettytab(5); removes OXTABS from TTYDEF_OFLAG in ttydefaults.h (the
defaults used by pty(4) - diff from martijn); and only sets OXTABS on
terminals which lack hts and tbc in tset(1) (from Thomas Dickey
upstream).
Addresses problems reported by tedu.
ok millert

Rockchip ARM SoCs.
ok millert@, deraadt@

magic numbers into sgttyb.  The "modern" replacement for f# is the
set of i#, o#, c#, l# to poke magic numbers into termios.
ok miod@