* lib/rubygems: Update to RubyGems 2.1.3

Fixed installing platform gems

  Restored concurrent requires

  Fixed installing gems with extensions with --install-dir

  Fixed `gem fetch -v` to install the latest version

  Fixed installing gems with "./" in their files entries

* test/rubygems/test_gem_package.rb:  Tests for the above.

* NEWS:  Updated for RubyGems 2.1.3


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42938 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/source.rb

@@ -25,23 +25,14 @@ class Gem::Source
   end
 
   def <=>(other)
-    case other
-    when Gem::Source::Installed,
-         Gem::Source::Local,
-         Gem::Source::SpecificFile then
-      -1
-    when Gem::Source then
-      if !@uri
-        return 0 unless other.uri
-        return 1
-      end
-
-      return -1 if !other.uri
-
-      @uri.to_s <=> other.uri.to_s
-    else
-      nil
+    if !@uri
+      return 0 unless other.uri
+      return -1
     end
+
+    return 1 if !other.uri
+
+    @uri.to_s <=> other.uri.to_s
   end
 
   include Comparable
@@ -67,7 +58,8 @@ class Gem::Source
   def cache_dir(uri)
     # Correct for windows paths
     escaped_path = uri.path.sub(/^\/([a-z]):\//i, '/\\1-/')
-    File.join Gem.spec_cache_dir, "#{uri.host}%#{uri.port}", File.dirname(escaped_path)
+    root = File.join Gem.user_home, '.gem', 'specs'
+    File.join root, "#{uri.host}%#{uri.port}", File.dirname(escaped_path)
   end
 
   def update_cache?
@@ -149,16 +141,4 @@ class Gem::Source
     fetcher = Gem::RemoteFetcher.fetcher
     fetcher.download spec, @uri.to_s, dir
   end
-
-  def pretty_print q # :nodoc:
-    q.group 2, '[Remote:', ']' do
-      q.breakable
-      q.text @uri.to_s
-    end
-  end
-
 end
-
-require 'rubygems/source/installed'
-require 'rubygems/source/specific_file'
-require 'rubygems/source/local'