* lib/rubygems: Update to RubyGems master 0a3814b. Changes:

Fixed extension directory in Gem::Specification#require_paths.

  Allow installation of gems when $HOME is nonexistent or unwritable.

  Use proper API in InstallCommand.

  Improve support for path option in gem dependency files.

  Remove warnings.

* test/rubygems:  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43357 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/source.rb

@@ -47,12 +47,7 @@ class Gem::Source
   include Comparable
 
   def ==(other)
-    case other
-    when self.class
-      @uri == other.uri
-    else
-      false
-    end
+    self.class === other and @uri == other.uri
   end
 
   alias_method :eql?, :==
@@ -71,7 +66,12 @@ class Gem::Source
   end
 
   def update_cache?
-    @update_cache ||= File.stat(Gem.user_home).uid == Process.uid
+    @update_cache ||=
+      begin
+        File.stat(Gem.user_home).uid == Process.uid
+      rescue Errno::ENOENT
+        false
+      end
   end
 
   def fetch_spec(name)