The Xaw examples were originally written in the 1980s, distributed as part of
the "mit" tree in X11R4.  With X11R5, they were moved to the "contrib" tree,
and (because Motif was chosen to replace Xaw), omitted from X11R6.

I have updated the examples, converting to ANSI C and replacing the include's
with a generic one to allow building the examples with the Xaw library as well
as some which have evolved from that starting point.
