Add most of the current methods of Traversable to IterableOps
Add most of the current methods of Traversable to IterableOps

martijnhoekstra/scala,martijnhoekstra/scala,lrytz/scala,scala/scala,martijnhoekstra/scala,lrytz/scala,scala/scala,scala/scala,lrytz/scala,scala/scala,lrytz/scala,martijnhoekstra/scala,scala/scala,martijnhoekstra/scala,martijnhoekstra/scala,scala/scala,lrytz/scala,lrytz/scala