mergestate: move _read() call to read constructor
With this patch, mergestate.clean() will no longer abort when it encounters an
unsupported merge type. However we hold off on testing it until backwards
compatibility is in place.
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 4 changes to 4 files
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 4 changes to 4 files
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved