in this commit:
RubyGems now chooses the test server port reliably. Patch by akr.
Partial implementation of bundler's Gemfile format.
Refactorings to improve the new resolver.
Fixes bugs in the resolver.
* test/rubygems: Tests for the above.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43643 b2dd03c8-39d4-4d8f-98ff-823fe69b080e