view .arcconfig @ 40507:e2a1584e9e3f

remotefilelog: rip out lz4 support

Some methods are left teased out so it's easier to build a migration
extension from v1 packs to v2. I also anticipate those methods will be
of use if we get around to adding configurable compression engines
before we end up jettisoning packs.

I think it would make sense to register one-shot `compress` and
`decompress` methods on our compression engines in util.py, but
indygreg mentioned that might not be straightforward.

Differential Revision: https://phab.mercurial-scm.org/D4944

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