Fix spec/ruby/command_line/rubylib_spec.rb for use with make test-spec
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63810 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Fix spec/ruby/command_line/rubylib_spec.rb for use with make test-spec
running from build 'src' (or running make test-spec).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63810 b2dd03c8-39d4-4d8f-98ff-823fe69b080e