- implemented the inventory bar. This object is a bit special because it requires a lot of parameters, most of which are easily set to defaults. To make handling easier, most are passed through a container object which does some processing up front.

- finished work on the Doom status bar. I also took the opportunity to fix the layout of the inventory bar which is a bit broken in SBARINFO.
- tuned the selection rules for deciding what creates the status bar, so that the most recent definition that can be found is chosen.

src/p_mobj.cpp

@@ -1045,6 +1045,12 @@ AInventory *AActor::FirstInv ()
 	return Inventory->NextInv ();
 }
 
+DEFINE_ACTION_FUNCTION(AActor, FirstInv)
+{
+	PARAM_SELF_PROLOGUE(AActor);
+	ACTION_RETURN_OBJECT(self->FirstInv());
+}
+
 //============================================================================
 //
 // AActor :: UseInventory