fixes:
RubyGems now disallows redirection from HTTPS to HTTP.
RubyGems now verifies SSL connections.
See https://github.com/rubygems/rubygems/blob/1.8/History.txt for
changes since 1.8.22.
* test/rubygems: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35404 b2dd03c8-39d4-4d8f-98ff-823fe69b080e