Redefine lvalues and calls in the grammar.
Redefine lvalues and calls in the grammar.

	* src/parser/ugrammar.y (message): Remove.
	(lvalue): Instead of defining as a special case of calls, define
	directly as "(<expr> .)* <id>".
	(call): Define as "<lvalue> <args>".

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