Introduce RELATIVE_RAILS_ROOT and changed spawner script to use it. P…

…rior to this change spawner would assume the non symlinked deploy directory which made reaper reload the wrong code after further deployments.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6531 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/lib/commands/process/spawner.rb

@@ -114,9 +114,9 @@ def self.can_bind_to_custom_address?
 OPTIONS = {
   :environment => "production",
   :spawner     => '/usr/bin/env spawn-fcgi',
-  :dispatcher  => File.expand_path(RAILS_ROOT + '/public/dispatch.fcgi'),
-  :pids        => File.expand_path(RAILS_ROOT + "/tmp/pids"),
-  :rails_root  => File.expand_path(RAILS_ROOT),
+  :dispatcher  => File.expand_path(RELATIVE_RAILS_ROOT + '/public/dispatch.fcgi'),
+  :pids        => File.expand_path(RELATIVE_RAILS_ROOT + "/tmp/pids"),
+  :rails_root  => File.expand_path(RELATIVE_RAILS_ROOT),
   :process     => "dispatch",
   :port        => 8000,
   :address     => '0.0.0.0',

railties/lib/initializer.rb

@@ -502,7 +502,8 @@ def set_root_path!
         else
           Pathname.new(::RAILS_ROOT).realpath.to_s
         end
-
+
+      Object.const_set(:RELATIVE_RAILS_ROOT, ::RAILS_ROOT.dup) unless defined?(::RELATIVE_RAILS_ROOT)
       ::RAILS_ROOT.replace @root_path
     end