Latest commit f51dfe6 Jun 12, 2016 @srowen srowen committed with rxin [SPARK-15086][CORE][STREAMING] Deprecate old Java accumulator API
## What changes were proposed in this pull request?

- Deprecate old Java accumulator API; should use Scala now
- Update Java tests and examples
- Don't bother testing old accumulator API in Java 8 (too)
- (fix a misspelling too)

## How was this patch tested?

Jenkins tests

Author: Sean Owen <sowen@cloudera.com>

Closes #13606 from srowen/SPARK-15086.