use requrie_relative

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63047 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/file/stat/ftype_spec.rb

@@ -1,5 +1,5 @@
-require "#{File.dirname(__FILE__)}/../../../spec_helper"
-require "#{File.dirname(__FILE__)}/../fixtures/file_types"
+require_relative '../../../spec_helper'
+require_relative '../fixtures/file_types'
 
 describe "File::Stat#ftype" do
   before :all do

spec/ruby/core/method/shared/to_s.rb

@@ -1,5 +1,5 @@
-require "#{File.dirname __FILE__}/../../../spec_helper"
-require "#{File.dirname __FILE__}/../fixtures/classes"
+require_relative '../../../spec_helper'
+require_relative '../fixtures/classes'
 
 describe :method_to_s, shared: true do
   before :each do