HPCC-8720 Add support for SET OF simpletype to embed plugins

Add support for set parameters/results.

Work in progress - so far only Python supported.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-8720 Add support for SET OF simpletype to embed plugins

Add support for set parameters/results.

Work in progress - added Java support.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-8720 Add support for SET OF simpletype to embed plugins

Add support for set parameters/results.

V8 Javascript ans R support for set parameters now complete.

Also fix handling of set of unsigned, and address some build issues.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-8720 Add support for SET OF simpletype to embed plugins

Minor changes following code review.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #3915 from richardkchapman/embedding

HPCC-8720 Add support for SET OF simpletype to embed plugins

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>