table: Implement raise/lower/sort-by-depth container functions
table: Implement raise/lower/sort-by-depth container functions

Implement the missing ClutterContainer interface functions by copying them
from MxStack.

clutter-project/mx,pwithnall/mx,jonnylamb/mx,jonnylamb/mx,clutter-project/mx,jonnylamb/mx,clutter-project/mx,clutter-project/mx,pwithnall/mx,pwithnall/mx,pwithnall/mx,jonnylamb/mx