cleanup support for Rails 2.3 and remove old integration tests

Rakefile

@@ -143,7 +143,6 @@ module JRubyJars
   end
   require jruby_rack_jar_path if defined?(JRUBY_VERSION)
 end
-require 'jruby/rack/version' # @deprecated to be removed in 1.2
 }
   end
 end

src/main/ruby/jruby/rack/rails/environment3.rb → src/main/ruby/jruby/rack/rails/environment.rb

@@ -9,7 +9,7 @@
 
 # Rails 3.x specific booter behavior.
 # @see JRuby::Rack::Railtie
-module JRuby::Rack::RailsBooter::Rails3Environment
+module JRuby::Rack::RailsBooter::RailsEnvironment
 
   # @return [Rails::Application] the (loaded) application instance
   def to_app
@@ -23,7 +23,7 @@ def load_environment
     require expand_path('config/boot.rb')
     require 'jruby/rack/rails/railtie'
     require expand_path('config/environment.rb')
-    require 'jruby/rack/rails/extensions3'
+    require 'jruby/rack/rails/extensions'
   end
 
   protected

src/main/ruby/jruby/rack/rails_booter.rb

@@ -27,13 +27,8 @@ def boot!
       ENV['RAILS_ROOT'] = app_path
       ENV['RAILS_ENV'] = rails_env
 
-      if rails2?
-        require 'jruby/rack/rails/environment2'
-        extend Rails2Environment
-      else
-        require 'jruby/rack/rails/environment3'
-        extend Rails3Environment
-      end
+      require 'jruby/rack/rails/environment'
+      extend RailsEnvironment
 
       set_public_root
       self
@@ -71,11 +66,6 @@ def run_boot_hooks
 
     private
 
-    def rails2?
-      app_path = real_path File.join(layout.app_uri, 'config/application.rb')
-      ! ( app_path && File.exist?(app_path) )
-    end
-
     class << self
 
       # @see #RailsRackApplicationFactory
@@ -96,6 +86,5 @@ def rails_booter
       end
 
     end
-
   end
 end