* lib/rubygems: Update to RubyGems master 4bdc4f2. Important changes

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

lib/rubygems/source.rb

@@ -52,6 +52,24 @@ class Gem::Source
 
   alias_method :eql?, :==
 
+  ##
+  # Returns a Set that can fetch specifications from this source.
+
+  def dependency_resolver_set # :nodoc:
+    uri = api_uri
+
+    bundler_api_uri = api_uri + './api/v1/dependencies'
+
+    begin
+      fetcher = Gem::RemoteFetcher.fetcher
+      fetcher.fetch_path bundler_api_uri, nil, true
+    rescue Gem::RemoteFetcher::FetchError
+      Gem::DependencyResolver::IndexSet.new self
+    else
+      Gem::DependencyResolver::APISet.new bundler_api_uri
+    end
+  end
+
   def hash
     @uri.hash
   end