#KJ-31 eliminate elab() wrappers for 'NewInstance.
1. Introduced two more rules: one packing from 'QNewInstance to 'NewInstance in the elaboration phase, another unpacking from 'NewInstance to 'QNewInstance in the execution phase. These two rules bring support for 'NewInstance back into execution phase.
2. Eliminated elab() wrapper for all execution-time terms like elab('Throw('NewInstance(...)))