view .arcconfig @ 34338:0c3e3810cdb6

dirstate: move parent reading to the dirstatemap class

As part of moving dirstate storage logic to a separate class, let's move the
function that reads the parents from the file. This will allow extensions to
write dirstate's that store the parents in other ways.

Differential Revision: https://phab.mercurial-scm.org/D758

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