* glib/Object.cs (ConnectDefaultHandlers): reflection code to
hook up overridden default signal handlers.
* glue/type.c (gtksharp_override_virtual_method): peek the gtype
and ref the class if it isn't created yet.
* sample/Subclass.cs : update to override Button.OnClicked.
svn path=/trunk/gtk-sharp/; revision=21559
* generator/BoxedGen.cs : s/uint/GLib.GType
* generator/ManualGen.cs : add a ctor to pass ToNative handle name
* generator/ObjectGen.cs : s/uint/GLib.GType
* generator/Signal.cs : use GLib.GType and call OverrideVirtualMethod
* generator/SymbolTable.cs : make GType a ManualGen and update a few
ManualGens to the new signatures.
* glib/DefaultSignalHandler.cs : s/Type/System.Type
* glib/ManagedValue.cs : s/uint/GLib.GType
* glib/Object.cs : s/uint/GLib.GType, add OverrideVirtualMethod.
* glib/Type.cs : s/uint/IntPtr, add static fields for fundamentals.
make it a value type and add ==, !=, Equals, and GetHashCode.
* glib/TypeConverter.cs : use new GType statics, not fundamentals.
* glib/Value.cs : use new GType statics, not fundamentals.
* gnome/*.custom : s/uint/GLib.GType
* gtk/*Store.custom : use GType statics, not fundamentals.
* sample/Subclass.cs : s/uint/GLib.GType.
svn path=/trunk/gtk-sharp/; revision=21181