dirstate: move the _rangemask filtering closer to its storage...
dirstate: move the _rangemask filtering closer to its storage
The goal is to get ready to move these kind of processing at a lower level. We start with move
move _rangemask filtering close to where it is sent to the lower level to make the future move trivial.
Differential Revision:
https://phab.mercurial-scm.org/D10929
