Add -D/--nodates options to hg diff/export that removes dates from diff headers
and replace uses of sed in the tests with --nodates.
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checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
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checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions
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