Send 'rails runner' help message to stdout instead of stderr.

[#5661 state:committed]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

railties/lib/rails/commands/runner.rb

@@ -17,7 +17,7 @@
   opts.separator ""
 
   opts.on("-h", "--help",
-          "Show this help message.") { $stderr.puts opts; exit }
+          "Show this help message.") { $stdout.puts opts; exit }
 
   if RbConfig::CONFIG['host_os'] !~ /mswin|mingw/
     opts.separator ""

railties/test/application/runner_test.rb

@@ -19,8 +19,7 @@ def self.count
     end
 
     def test_should_include_runner_in_shebang_line_in_help
-      # redirect stderr to stdout as backticks don't capture stderr
-      assert_match "/rails runner", Dir.chdir(app_path) { `bundle exec rails runner --help 2>&1` }
+      assert_match "/rails runner", Dir.chdir(app_path) { `bundle exec rails runner --help` }
     end
 
     def test_should_run_ruby_statement