🚀 go-pugleaf

I'm new to gnuchess & I like it a lot.  But here's a bug you'll might
want to fix.   In 
gnuchess-4.0.pl74/src/Makefile 
we have
DISTDIR= ../..
clean:
	-find $(DISTDIR) \( -name '*.o' -o -name '*~' -o -name 'CL*' 
   -o -name 'PATCH*' -o -name '#*#' -o -name '%*%' -o -name '*orig' \)
   -exec rm -f {} \;

So make clean attacks your whole directory tree, removing ~ files and
.orig files wherever they can be found...