Scott Zhu 090f260aab Copy the generic_util logic to feature column for serialization/deserialization.
This is the final dependency from feature_column to Keras.

The copied functions are trimmed down version since it doesn't have access to Keras global custom object registration, which I don't think are used by feature column. The custom object scope will still work.

PiperOrigin-RevId: 315621765
Change-Id: I2ae22af83d625c8e55c7fe21b42194bbdbfded23
2020-06-09 21:20:24 -07:00
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