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.
This is the penultimate step of migrating away from sharedFields. The next step is to remove them entirely.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=116364048