* generator/InterfaceGen.cs:
* generator/Signal.cs: use generic signal marshaling instead of
generating signature specific marshaling callbacks.
* glib/glue/closure.c: glue for new closure impl.
* glib/Object.cs: open up a couple hashes internally.
* glib/Signal.cs: hook in closure based connection and expose
EmissionHook functionality for atk usage.
* glib/SignalClosure.cs: new generic signal marshaling mechanism.
* glib/ToggleRef.cs: null guarding in Target and let Signal remove
itself from hash when it disposes itself.
svn path=/trunk/gtk-sharp/; revision=102241
