yams #189299 separate unique multi column indexes creation from eschema2sql [validation pending]

because this must be done later, when entity types have eids

prioritynormal
typeenhancement
done in0.39.0
load0.100
load left0.000
closed by#f5b318507af0 [schema2sql] provide an index name computation function for unique together constraints
patch[schema2sql] provide an index name computation function for unique together constraints [applied][schema2sql] provide an index name computation function for unique together constraints [rejected]