JRuby + win32ole warnings on Windows 7

gistfile1.rb

# Rakefile, in directory c:\users\djberge\foo
require 'rake'
require 'rake/testtask'

Rake::TestTask.new do |t|
  t.verbose = true
  t.warning = true
end

task :default => :test

# test_foo.rb, in directory c:\users\djberge\foo\test
require 'test/unit'
require 'win32ole'

class TC_Foo < Test::Unit::TestCase
  def test_foo
    assert_equal(1,1)
  end
end

# Running "jruby -S rake" results in lots of warnings: https://gist.github.com/2893906