uobject: Update doxygen doc on UNotify*, cleanup macros.
uobject: Update doxygen doc on UNotify*, cleanup macros.

	* include/urbi/uobject.hh (UNotify*): Update doxygen version
	of the code, remove now longuer used intermediate macro.

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