* lib/rubygems/package/old.rb:  Fix loading old format gems on ruby
  1.8.  This commit is only so trunk and rubygems master have the same
  code.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39145 b2dd03c8-39d4-4d8f-98ff-823fe69b080e