* lib/rake.rb, lib/rake/*.rb: Upgrade to rake-10.3.2

[fix GH-668]
* test/rake/*.rb: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46818 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rake/clean.rb

@@ -31,9 +31,30 @@ module Rake
       begin
         rm_r file_name, opts
       rescue StandardError => ex
-        puts "Failed to remove #{file_name}: #{ex}"
+        puts "Failed to remove #{file_name}: #{ex}" unless file_already_gone?(file_name)
       end
     end
+
+    def file_already_gone?(file_name)
+      return false if File.exist?(file_name)
+
+      path = file_name
+      prev = nil
+
+      while path = File.dirname(path)
+        return false if cant_be_deleted?(path)
+        break if [prev, "."].include?(path)
+        prev = path
+      end
+      true
+    end
+    private_class_method :file_already_gone?
+
+    def cant_be_deleted?(path_name)
+      File.exist?(path_name) &&
+        (!File.readable?(path_name) || !File.executable?(path_name))
+    end
+    private_class_method :cant_be_deleted?
   end
 end