Update Vendored Rack to 1.2.0

Also update tests for itextomml 1.3.25.

vendor/plugins/rack/spec/spec_handler.rb

@@ -0,0 +1,41 @@
+require 'rack/handler'
+
+class Rack::Handler::Lobster; end
+class RockLobster; end
+
+describe Rack::Handler do
+  it "has registered default handlers" do
+    Rack::Handler.get('cgi').should.equal Rack::Handler::CGI
+    Rack::Handler.get('fastcgi').should.equal Rack::Handler::FastCGI
+    Rack::Handler.get('mongrel').should.equal Rack::Handler::Mongrel
+    Rack::Handler.get('webrick').should.equal Rack::Handler::WEBrick
+  end
+
+  should "raise NameError if handler doesn't exist" do
+    lambda {
+      Rack::Handler.get('boom')
+    }.should.raise(NameError)
+  end
+
+  should "get unregistered, but already required, handler by name" do
+    Rack::Handler.get('Lobster').should.equal Rack::Handler::Lobster
+  end
+
+  should "register custom handler" do
+    Rack::Handler.register('rock_lobster', 'RockLobster')
+    Rack::Handler.get('rock_lobster').should.equal RockLobster
+  end
+
+  should "not need registration for properly coded handlers even if not already required" do
+    begin
+      $LOAD_PATH.push File.expand_path('../unregistered_handler', __FILE__)
+      Rack::Handler.get('Unregistered').should.equal Rack::Handler::Unregistered
+      lambda {
+        Rack::Handler.get('UnRegistered')
+      }.should.raise(NameError)
+      Rack::Handler.get('UnregisteredLongOne').should.equal Rack::Handler::UnregisteredLongOne
+    ensure
+      $LOAD_PATH.delete File.expand_path('../unregistered_handler', __FILE__)
+    end
+  end
+end