Update to Guava 14 final

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@519 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Better handling of exceptions when they are not re-thrown

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@520 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Clarify service timing method calls units

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@521 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Add exponential backoff to ReloadingReference

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@522 0d189622-dca1-7e23-9e30-e8815eb7bd2f