Merge pull request #610 from ruby/use-realpath-osx-tempdir

Expand temp dir used by File.realpath.

Author: hsbt

test/test_rdoc_rdoc.rb

@@ -200,7 +200,7 @@ def test_normalized_file_list_with_dot_doc
       expected_files << a
       expected_files << b
 
-      @rdoc.normalized_file_list [dir]
+      @rdoc.normalized_file_list [File.realpath(dir)]
     end
 
     files = files.map { |file| File.expand_path file }
@@ -227,7 +227,7 @@ def test_normalized_file_list_with_dot_doc_overridden_by_exclude_option
       expected_files << a
 
       @rdoc.options.exclude = Regexp.new(['b.rb'].join('|'))
-      @rdoc.normalized_file_list [dir]
+      @rdoc.normalized_file_list [File.realpath(dir)]
     end
 
     files = files.map { |file| File.expand_path file }