ast_ coding style.
ast_ coding style.

	* src/parser/ugrammar.y (slot_change, slot_update, slot_set)
	(slot_remove): Rename as...
	(ast_slot_change, ast_slot_update, ast_slot_set, ast_slot_remove):
	these.

urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi,aldebaran/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi