Add prefixes to the SQL proto enums. (#404)
Add prefixes to the SQL proto enums. (#404)

* Add prefixes to the SQL proto enums.

Prevent name collisions in SQL proto enums by adding a per-enum prefix
to each proto constant.

* Replace abbreviated prefixes with full restatement of enum name.
google-research/raksha,google-research/raksha,google-research/raksha,google-research/raksha