GoogleCloudPlatform/gcloud-python — pull request #463 by dhermes (2014-12-23 07:38:44+00:00)
Title: Address sixth part of 451: Make dataset_id required on Key.

Addresses seventh part of #451.

Also requires removing the `dataset_id` from generated protobufs
due to GoogleCloudPlatform/google-cloud-datastore#59. This
occurs also in `__key__` filters and ancestor queries.

**NOTE**: This has #462 as a diffbase.