4.4BSD snapshot (revision 8.1); add 1993 to copyright
origtermio -> curses_termios.
Fixed typos.
CURSES_ERR/OK --> ERR/OK
Various typos and style corrections and additional text as well.
Redid documentation to reflect new package.
new copyright; att/bsd/shared
add Berkeley specific copyright notices
Ken Arnold edits for document distributed with 4.3BSD
document distributed with 4.2BSD
document distributed with 4.1BSD