This change renames directories in preparation for the great package rename. The repository is now in a broken state because the code itself hasn't been updated. However this should ensure that git correctly preserves history for each file.
------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=118207124
------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=117945626