New debug scheme with explicit debug channels declaration.

diff --git a/graphics/d3dexecutebuffer.c b/graphics/d3dexecutebuffer.c
index 4539ec1..f24a552 100644
--- a/graphics/d3dexecutebuffer.c
+++ b/graphics/d3dexecutebuffer.c
@@ -16,6 +16,8 @@
 
 #include "d3d_private.h"
 
+DEFAULT_DEBUG_CHANNEL(ddraw)
+
 #ifdef HAVE_MESAGL
 
 /* Structure to store the 'semi transformed' vertices */