* ext/openssl/lib/openssl/ssl.rb: stricter hostname verification
following RFC 6125. with the patch provided by Tony Arcieri and
Hiroshi Nakamura [ruby-core:61545] [Bug #9644]
* test/openssl/test_ssl.rb: add tests for above.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@50294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e