8006182: cleanup to use java.util.Base64 in java security component, providers, and regression tests Summary: Refactored code to use java.util.Base64 Mime Encoder and Decoder as a replacement for sun.misc.BASE64Encoder and sun.misc.BASE64Decoder Reviewed-by: vinnie, chegar, sherman

[libdefaults]
   default_realm = RABBIT.HOLE
[realms]

RABBIT.HOLE = {
   kdc = 127.0.0.1:13434
   kdc = 127.0.0.1:13435
   kdc = 127.0.0.1:13436
}