test_super.rb: rename

* test/ruby/test_super.rb (TestSuper#test_double_include2): rename to
  get rid of redefinition.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36615 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_super.rb

@@ -244,7 +244,7 @@ class TestSuper < Test::Unit::TestCase
     A.send(:include, Override)
   end
 
-  def test_double_include
+  def test_double_include2
     assert_equal([:Base, :Override, :A, :Override, :B],
                  DoubleInclude2::B.new.foo)
   end