platform.

TIOCGWINSZ is defined as follows:

    Linux       asm/ioctls.h
    FreeBSD     sys/ttycom.h. This file is included by sys/ioctl.h.
    Solaris     sys/termios.h

This patch tells print.c to know TIOCGWINSZ on Solaris platform. Same code is
founded in src/bin/psal/common.c.

Kenji Sugita