Provide more detailed exception output on validation failure
Provide more detailed exception output on validation failure

Build error message dynamically during validation

Invert validation logic, use err message as flag

Use typewrapper for validation result

Fix comment change, revert test behavior

Missed a letter

Fix code style, some logic errors

Couple more style fixes

Fix record error message

Update err output, fix py26 format errors

Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro,Yelp/avro