Updated the dice button click handler to cope with double-clicks as though they were just two single clicks.  For example, when the user double clicks on a button, Windows sends first a WM_LBUTTONDOWN, then a WM_LBUTTONDBLCLK.  I handle the DOWN event normally, and then handle the DBLCLK event as though it were a normal DOWN.
Updated the dice button click handler to cope with double-clicks as though they were just two single clicks.  For example, when the user double clicks on a button, Windows sends first a WM_LBUTTONDOWN, then a WM_LBUTTONDBLCLK.  I handle the DOWN event normally, and then handle the DBLCLK event as though it were a normal DOWN.

direvus/third,direvus/third