Added restrictions that can be applied to any type (minOccurs, maxOccurs, nillable, default).
Added restrictions that can be applied to any type (minOccurs, maxOccurs, nillable, default).

martijnvermaat/rpclib,arskom/spyne,arskom/spyne,arskom/spyne,martijnvermaat/rpclib,martijnvermaat/rpclib