My console rewrite is finally available

[Kazuhiro Fujieda]

In the current implementation, a process in notty mode can't set
all termios parameters to its console through one of file
descriptors associated with it. It have to use the descripter 1
or 2 for c_oflags, and the descripter 0 for c_lflags and c_iflags.

Thus `less' can't work properly in notty mode because it use the
descripter 2 for setting the console to `raw mode' and it fails.
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  | AIST      Kazuhiro Fujieda <fujieda@jaist.ac.jp>
  | HOKURIKU  School of Information Science
o_/ 1990      Japan Advanced Institute of Science and Technology