fixes, show/hide functions for the title buttons, and I've replaced
gtk_clist_new with gtk_clist_new_with_titles.  gtk_clist_new will
create a list without title bars which can be added later by calling
gtk_clist_set_column_(title/widget) for the column button you want to add.
A column button for column 0 always exhists, and buttons span all columns
until they come to the next exhisting button, or the last column. -Jay