Imports of package auth

PathSynopsis
github.com/nats-io/gnatsd/serverPackage sublist is a routing mechanism to handle subject distribution and provides a facility to match subjects from published messages to interested subscribers.
golang.org/x/crypto/bcryptPackage bcrypt implements Provos and Mazières's bcrypt adaptive hashing algorithm.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.