The old API should not be used in newly written code; we have better methods for setting up and modifying the scene graph, now.
These methods are short-hands for accessing the position and size, which are already shorthands for accessing the various dimensional and positional attributes. Plus, they use ClutterGeometry, which is a fairly bad data type for a rectangle.
Except for macros, we now entirely depend on the deprecation warnings instead of a guard.
They are already in the deprecated/ directory, the suffix is redundant, and there is no chance of collision.