Squashed 'avro/' changes from afb745a..a396059

a396059 New test and corresponding fix for multi-line schemas not being handled properly. The bug only manifested itself after restarting the file-based repo, since on the first run, the registered schemas are cached (which is done properly).
82a00f7 Bumped up Jetty-8 version to the latest stable one in the schema-repo

git-subtree-dir: avro
git-subtree-split: a3960590177e08b3586584cf288b1d4ba9ca1572
Merge commit 'ad084477a392624c340c692f62fedd9773ceb7a1'