Cleanup and documentation updates:

- Remove shared/str.h where not used.
- Remove shared/debug.h from all files as it has been completely replaced
  by shared/report.h (it will be removed later).
- Add more doxygen comments to shared/* and clients/lcdproc/*.
- Include static functions in doxygen output.

server/drivers/glk.c

@@ -35,7 +35,6 @@
 
 #define DEBUG 1
 #include "lcd.h"
-#include "shared/str.h"
 #include "glk.h"
 #include "glkproto.h"
 #include "report.h"