gh-98831: rewrite UNPACK_EX, UNPACK_SEQUENCE, UNPACK_SEQUENCE_TWO_TUPLE in the instruction definition DSL

[iritkatriel]

• Issue: Generate the interpreter #98831

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @iritkatriel for commit e0accbb 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.

[gvanrossum]

Shouldn't you also move the family declaration in front of the first instruction of the family? (Where that family is now is effectively commented-out.)

[gvanrossum]

LG, I'll take care of the family when I do UNPACK_SEQUENCE_{TUPLE,LIST}.