HPCC-8544 Remove deprecated syntax DATASET <expression>

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Merge pull request #3842 from ghalliday/issue8544

HPCC-8544 Remove deprecated syntax DATASET <expression>

Reviewed-By: Richard Chapman <rchapan@hpccsystems.com>
HPCC-8030 Java/Python language support in ECL

Initial work on codegen to add syntax for embedding other languages.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-8030 Java/Python language support in ECL

Further work on codegen to add code generation for embedding other
languages.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-8030 Java/Python language support in ECL

Add a language support plugin for V8 Javascipt engine.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>