New debug scheme with explicit debug channels declaration.

diff --git a/windows/timer.c b/windows/timer.c
index 2124c47..88bce99 100644
--- a/windows/timer.c
+++ b/windows/timer.c
@@ -10,6 +10,8 @@
 #include "winproc.h"
 #include "debug.h"
 
+DEFAULT_DEBUG_CHANNEL(timer)
+
 
 typedef struct tagTIMER
 {