for NO_WINDOW widgets, add their allocation.y to the position of the

for NO_WINDOW widgets, add their allocation.y to the position of the

Sat Jan 16 19:42:48 1999  George Lebl  <jirka@5z.com>

        * gtk/gtktooltips.c: for NO_WINDOW widgets, add their allocation.y
          to the position of the tooltip. This fixes tooltip positioning
          problems with some widgets such as a checkbox.