graft: don't remove from a list in a loop
This addresses a TODO added in
a1381eea7c7d (graft: do not use
`.remove` on a smart set (regression), 2014-04-28). I couldn't measure
any speedup.
Differential Revision: https://phab.mercurial-scm.org/D7805
This directory is meant to cache artifacts useful for tests (such as bundle).
Those artifacts need to be cached because they are slow to regenerate on each
test but too large to be tracked within the repository. They are not expected
to change between each run and can be cached.
The `./scripts/` contains code to generate the artifact while the `cache`
directory contains resulting artifact.