UValue: casters to/from boost::unordered_map.
UValue: casters to/from boost::unordered_map.

	* include/urbi/uvalue.hxx (operator, uvalue_caster<boost::unordered_map>): New.

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