AVRO-504. Improved error handling while schema parsing. merge from trunk
AVRO-504. Improved error handling while schema parsing. merge from trunk


git-svn-id: 233bdd24917e43e666b2ac8b4315b57cfcb8c6f9@951275 13f79535-47bb-0310-9956-ffa450edef68

mgaffney/avro,peterholc/avro,mgaffney/avro,peterholc/avro,peterholc/avro,peterholc/avro,mgaffney/avro,peterholc/avro,mgaffney/avro,mgaffney/avro,peterholc/avro,mgaffney/avro