Change MAKE-INPUT-BUFFER and MAKE-OUTPUT-BUFFER to default to text

Change MAKE-INPUT-BUFFER and MAKE-OUTPUT-BUFFER to default to text
mode rather than binary mode.  Ports that do not specify the mode
usually want text mode.  Unfortunately, the DOS/NT microcode believes
that the console is special -- the console microcode performs line
translation directly on those systems -- and this must be changed now.