Score: Negative
General Comment:
The fix should lock version 1.0.5, not 1.0.6 as stated in the actual fix:
+gem 'jruby-rack', '1.0.6'
For more information:
http://code.google.com/p/appengine-jruby/source/detail?r=6a6909990e5d54a7194772f892232d861dc80777