Connect the debug driver to the build system. It has always lived only in

CVS and was not to be compiled by 'make'. However, it may serve as a template
for new drivers. Therefore add it to Makefile.am to have it in the
distribution. Note that it will only get compiled if explicitly given to
configure or if '--enable-debug' is used with '--drivers=all'.

server/drivers/debug.h

@@ -1,8 +1,6 @@
 #ifndef LCD_DEBUG_H
 #define LCD_DEBUG_H
 
-#include "lcd.h"
-
 MODULE_EXPORT int  debug_init (Driver *drvthis);
 MODULE_EXPORT void debug_close (Driver *drvthis);
 MODULE_EXPORT int  debug_width (Driver *drvthis);