* generator/CallbackGen.cs : don't derive Wrappers from DelegateWrapper
any more. It leaks delegates like crazy. We effectively now use call
scope as the default for delegate parameters.
* generator/MethodBody.cs : use new simpler Wrapper ctor.
* glib/DelegateWrapper.cs : mark the ctor obsolete so people know to
update any manually coded wrappers out there.
* */*.custom : use new simpler Callback Wrapper ctors.
svn path=/trunk/gtk-sharp/; revision=41738
* gtk/Gtk.metadata : hide all the SignalFunc using Toolbar methods.
* gtk/Makefile.am : add the new custom.
* gtk/Toolbar.custom : implement the SignalFunc methods. Deal with
null for Widget params in *Element.
svn path=/trunk/gtk-sharp/; revision=39509
