Add patch level to Ruby version information

Given the recent security related patches to ruby and rails it is more
important than ever to know what patch level you are running.

railties/lib/rails/info.rb

@@ -61,8 +61,10 @@ def to_html
       end
     end
 
-    # The Ruby version and platform, e.g. "1.8.2 (powerpc-darwin8.2.0)".
-    property 'Ruby version', "#{RUBY_VERSION} (#{RUBY_PLATFORM})"
+    # The Ruby version and platform, e.g. "2.0.0p247 (x86_64-darwin12.4.0)".
+    property 'Ruby version' do
+      "#{RUBY_VERSION}-p#{RUBY_PATCHLEVEL} (#{RUBY_PLATFORM})"
+    end
 
     # The RubyGems version, if it's installed.
     property 'RubyGems version' do