[docs] [issue26213] Document BUILD_LIST_UNPACK & BUILD_TUPLE_UNPACK

[Brett Cannon]

New submission from Brett Cannon:

Turns out the BUILD_TUPLE_UNPACK and BUILD_LIST_UNPACK opcodes are undocumented in the dis module.

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assignee: docs at python
components: Documentation
messages: 258985
nosy: benjamin.peterson, brett.cannon, docs at python
priority: low
severity: normal
stage: needs patch
status: open
title: Document BUILD_LIST_UNPACK & BUILD_TUPLE_UNPACK
versions: Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26213>
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