* lib/rubygems: Update to RubyGems 2.4.1 master(713ab65)

Complete history at:
  https://github.com/rubygems/rubygems/blob/master/History.txt#L3-L216
* test/rubygems:  ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47582 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/resolver/lock_specification.rb

@@ -23,7 +23,7 @@ class Gem::Resolver::LockSpecification < Gem::Resolver::Specification
   # This is a null install as a locked specification is considered installed.
   # +options+ are ignored.
 
-  def install options
+  def install options = {}
     destination = options[:install_dir] || Gem.dir
 
     if File.exist? File.join(destination, 'specifications', spec.spec_name) then
@@ -41,10 +41,36 @@ class Gem::Resolver::LockSpecification < Gem::Resolver::Specification
     @dependencies << dependency
   end
 
+  def pretty_print q # :nodoc:
+    q.group 2, '[LockSpecification', ']' do
+      q.breakable
+      q.text "name: #{@name}"
+
+      q.breakable
+      q.text "version: #{@version}"
+
+      unless @platform == Gem::Platform::RUBY then
+        q.breakable
+        q.text "platform: #{@platform}"
+      end
+
+      unless @dependencies.empty? then
+        q.breakable
+        q.text 'dependencies:'
+        q.breakable
+        q.pp @dependencies
+      end
+    end
+  end
+
   ##
   # A specification constructed from the lockfile is returned
 
   def spec
+    @spec ||= Gem::Specification.find { |spec|
+      spec.name == @name and spec.version == @version
+    }
+
     @spec ||= Gem::Specification.new do |s|
       s.name     = @name
       s.version  = @version