Update symbols file
Deprecate ClutterTableLayout

The table layout manager has various issues:

  • no support for RTL flipping
  • most of the layout API is legacy, and has been replaced by the
    alignment and expansion flags on ClutterActor
  • the animation API is legacy, and has been replaced by the
    implicitly animatable allocation
  • the spanning cells handling is a bit awkward, as is its API

On top of that, we imported the grid layout management policy from GTK+
into ClutterGridLayout, which provides all the required features in a
more well-designed API.

Instead of wasting time and resources updating TableLayout, we should
deprecate it and point developers of the GridLayout.