dirstate: introduce a symbolic constant for the AMBIGUOUS_TIME marker...
dirstate: introduce a symbolic constant for the AMBIGUOUS_TIME marker
This is going to be clearer and easier to track than -1. Ultimately I would
like to get ride of this special value everywhere but in the lower level,
however we need to clarify the API first. This changeset is part of such
clarification.
Differential Revision:
https://phab.mercurial-scm.org/D10928
