cngt: some small fixes

- Makefile: updated program name in title comment
- cngt.c (do_key): "l" moved left, like "h"
- cngt.c (main): when starting, immediately move to initial position
- getkey.c (tty_open): open /dev/tty read-only, not write-only

cngt/Makefile

@@ -1,5 +1,5 @@
 #
-# Makefile - Makefile of drl2gp
+# Makefile - Makefile of cngt
 #
 # Written 2010 by Werner Almesberger
 # Copyright 2010 by Werner Almesberger

cngt/cngt.c

@@ -77,7 +77,7 @@ static int do_key(char c)
 		break;
 	case 'l':
 		up();
-		x -= STEP;
+		x += STEP;
 		move();
 		break;
 	case 'q':
@@ -124,6 +124,7 @@ int main(int argc, char **argv)
 	x = pos_x[0];
 	y = pos_y[0];
 	z = z0+height;
+	move();
 
 	while ((c = getkey()))
 		if (do_key(c))

cngt/getkey.c

@@ -40,7 +40,7 @@ static void tty_open(void)
 {
 	struct termios new;
 
-	tty = open(TTY_NAME, O_WRONLY | O_NOCTTY);
+	tty = open(TTY_NAME, O_RDONLY | O_NOCTTY);
 	if (tty < 0) {
 		perror(TTY_NAME);
 		exit(1);