Correcting _CopyFromEntity behavior for repeated properties. Fixes Issue 57.
Correcting _CopyFromEntity behavior for repeated properties. Fixes Issue 57.

Reviewed in https://codereview.appspot.com/8785045/

mnieper/endpoints-proto-datastore,GoogleCloudPlatform/endpoints-proto-datastore,jbergant/endpoints-proto-datastore,dhermes/endpoints-proto-datastore,maxandron/endpoints-proto-datastore