Replace most uses of Map by HashMap

* Map is unnecessary and inefficient in almost every case.
* Replaced by the new HashMap.
* Renamed Map to RBMap and Set to RBSet for cases that still make sense
  (order matters) but use is discouraged.

There were very few cases where replacing by HashMap was undesired because
keeping the key order was intended.
I tried to keep those (as RBMap) as much as possible, but might have missed
some. Review appreciated!

1 files changed, 2 insertions, 2 deletions

diff --git a/scene/2d/area_2d.h b/scene/2d/area_2d.h
index a42e7722b0..a584420ced 100644
--- a/scene/2d/area_2d.h
+++ b/scene/2d/area_2d.h
@@ -94,7 +94,7 @@ private:
 		VSet<ShapePair> shapes;
 	};
 
-	Map<ObjectID, BodyState> body_map;
+	HashMap<ObjectID, BodyState> body_map;
 
 	void _area_inout(int p_status, const RID &p_area, ObjectID p_instance, int p_area_shape, int p_self_shape);
 
@@ -126,7 +126,7 @@ private:
 		VSet<AreaShapePair> shapes;
 	};
 
-	Map<ObjectID, AreaState> area_map;
+	HashMap<ObjectID, AreaState> area_map;
 	void _clear_monitoring();
 
 	bool audio_bus_override = false;