loader: Fix parsing of last dumped revision
svnrdump can output multiple error messages so we need to iterate in reverse order on stderr output until finding a line that starts with "* Dumped revision".
Migrated from D6879 (view on Phabricator)
Staging instance, all changes can be removed at any time
svnrdump can output multiple error messages so we need to iterate in reverse order on stderr output until finding a line that starts with "* Dumped revision".
Migrated from D6879 (view on Phabricator)