phases: updatephases should not skip internal phase Historically, updatephases used to skip the secret phase, but wasn't updated when archived and internal were added. Differential Revision: https://phab.mercurial-scm.org/D8696

repoview: use the phasecache directly to determine mutable revisions This speeds up no-change updates from 1.3s to 0.85s for my NetBSD test repository. Differential Revision: https://phab.mercurial-scm.org/D8670

phases: provide a test and accessor for non-public phase roots This decouples users from the implementation details of the phasecache. Also document a historic artifact about the stored phaseroots. Differential Revision: https://phab.mercurial-scm.org/D8694

hg-core: define a `dirstate_status` `Operation` This is 3/3 in a series of patches to improve dirstate status' code. Following in the footsteps of a46e36b82461, we move the main status functionality to an `Operation`. This will most likely be subject to change in the future (what function signature, what parameters, etc., but we will see when `rhg` gets `hg status` support. Differential Revision: https://phab.mercurial-scm.org/D8663