via <termios.h> (and document them.) Bump libc minor number for them.
Arrange for "struct winsize" to become visible in <termios.h>
Fix stty(1) so that "cols" is reported as the arg to set number of columns,
and "columns" is the alias, rather than the other way around, as "cols" is
what has been added to POSIX.
This is to conform with updates to be included in 1003.1 issue 8
(whenever that gets published) currently available at:
http://austingroupbugs.net/view.php?id=1053 (see note 3863)
http://austingroupbugs.net/view.php?id=1151 (see note 3856)