AnalyzeConstraints processes the zone config constraints that apply to a range along with the current replicas for a range, spitting back out information about which constraints are satisfied by which replicas and which replicas satisfy which constraints, aiding in allocation decisions.

SubConstraintsCheck checks a store against a single set of constraints (out of the possibly numerous sets that apply to a range), returning true iff the store matches the constraints.

AnalyzedConstraints comment !!!.