The source project of this merge request has been removed.
Append ".1" to the legacy cookie of first split commits
When commits were split, the first commit's legacyID was correctly updated with a ".1" suffix, but its "SVN:" cookie in the legacy map was not. Delete the old entry, and insert a new one with the correct cookie for consistency with the other split commits.
Also update svnLinkFixups which now needs to look for split commit cookies, and improve the comments therein.