Implemented debug context support.
Implemented debug context support.

libavg/libavg,libavg/libavg,hoodie/libavg,th3infinity/libavg,hoodie/libavg,th3infinity/libavg,th3infinity/libavg,hoodie/libavg,hoodie/libavg,th3infinity/libavg,libavg/libavg,libavg/libavg