New debug scheme with explicit debug channels declaration.

diff --git a/console/ncurses.c b/console/ncurses.c
index 84a4f21..1893730 100644
--- a/console/ncurses.c
+++ b/console/ncurses.c
@@ -24,6 +24,8 @@
 #include "debug.h"
 #include "options.h"
 
+DEFAULT_DEBUG_CHANNEL(console)
+
 #undef ERR /* Use ncurses's err() */
 #ifdef HAVE_NCURSES_H
 # include <ncurses.h>