$NetBSD: patch-Rakefile,v 1.1 2013/03/07 17:05:42 taca Exp $

* Require modern rule from rubygems and class.

--- Rakefile.orig	2013-03-07 14:46:35.000000000 +0000
+++ Rakefile
@@ -21,7 +21,7 @@ end
 
 require 'rake'
 require 'rake/clean'
-require 'rake/gempackagetask'
+require 'rubygems/package_task'
 require 'rake/testtask'
 
 require 'mkrf/rakehelper'
@@ -162,7 +162,7 @@ spec = Gem::Specification.new do |s|
 end
 
 # Create a task for creating a ruby gem
-Rake::GemPackageTask.new(spec) do |pkg|
+Gem::PackageTask.new(spec) do |pkg|
     pkg.gem_spec = spec
     pkg.need_tar = true
 end