Few changes in the 'widgets' package.

* introducing __all__ in modules, so __init__ imports only public objects;
  * MultiTypeComboEntry renamed to ValidatedComboEntry and different data
    type support implemented;
  * ShortlistComboEntry introduced;
  * ValueAction and ValueToolItem introduced;
  * ComboToolAction and ComboToolItem are removed, ValueAction and
    ToolComboEntry are implemented instead;


svn: r10763

src/widgets/expandcollapsearrow.py

@@ -20,6 +20,8 @@
 
 # $Id$
 
+__all__ = ["ExpandCollapseArrow"]
+
 #-------------------------------------------------------------------------
 #
 # Standard python modules