win32tty changes

1. Switch to low-level console routines for performance improvements.
2. Instead of moving the cursor around like a real tty, just track the
   destination coordinates of where the cursor should be, and
   defer the movement until user input is expected.

Credit to <Someone> for #2.

sys/share/pcunix.c

@@ -103,9 +103,6 @@ getlock()
 # if defined(MSDOS) && defined(NO_TERMS)
 	int grmode = iflags.grmode;
 # endif
-#ifdef WIN32CON
-	if (iflags.rawio) set_output_mode(0);
-#endif
 	/* we ignore QUIT and INT at this point */
 	if (!lock_file(HLOCK, LOCKPREFIX, 10)) {
 		wait_synch();
@@ -263,9 +260,6 @@ gotlock:
 # if defined(MSDOS) && defined(NO_TERMS)
 	if (grmode) gr_init();
 # endif
-#ifdef WIN32CON
-	if (!iflags.rawio) set_output_mode(1);
-#endif
 }	
 #endif /* PC_LOCKING */