Added absolute path for config.ru as well. Turns out this is also nee…

…ded to fix the daemon issue under ruby 1.8.7

[#4531 state:resolved]

Signed-off-by: José Valim <jose.valim@gmail.com>

railties/lib/rails/commands/server.rb

@@ -83,7 +83,8 @@ def default_options
         :environment => (ENV['RAILS_ENV'] || "development").dup,
         :daemonize   => false,
         :debugger    => false,
-        :pid         => File.expand_path("tmp/pids/server.pid")
+        :pid         => File.expand_path("tmp/pids/server.pid"),
+        :config      => File.expand_path("config.ru")
       })
     end
   end