* lib/delegate.rb (SimpleDelegator::dup): removed needless argument.
	  [ruby-list:44910]
	* lib/delegate.rb (clone, dup): keep relationship with the target
	  object.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@17286 b2dd03c8-39d4-4d8f-98ff-823fe69b080e