HPCC-10460 Streamed dataset support for Java

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-10460 Streamed dataset support for Java

Fix memory leak of incoming Roxie rows

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #5517 from richardkchapman/java-stream

HPCC-10460 Streamed dataset support for Java

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>