urbi-console: don't report urbi-console mode several times.
urbi-console: don't report urbi-console mode several times.

	* src/parser/utoken.l (init): New static variable used to report
	only once the activation of UCONSOLE_MODE.

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