code: public SetResponse
  lookupRecords(Name name, int type, int minCred) {
  	return lookup(name, type, minCred);
  }
docs: Looks up Records in the Cache.  This follows CNAMEs and handles negatively
  cached data.
  @param name The name to look up
  @param type The type to look up
  @param minCred The minimum acceptable credibility
  @return A SetResponse object
  @see SetResponse
  @see Credibility