* DatabaseLookupmessage:

- Add support for requesting an encrypted reply
* NetDB:
  - Add support for encrypted DatabaseSearchReplyMessage and DatabaseStoreMessage
    in response to a DatabaseLookupMessage
* PRNG: Cleanups using Collections.singletonMap()
* Router utils: New RemovableSingletonSet
* TransientSessionKeyManager:
  - Support variable expiration for inbound tag sets
  - Several efficiency improvements
* VersionComparator: Add static method, use most places

core/java/src/gnu/crypto/prng/AsyncFortunaStandalone.java

@@ -1,6 +1,6 @@
 package gnu.crypto.prng;
 
-import java.util.HashMap;
+import java.util.Collections;
 import java.util.Map;
 import java.util.concurrent.LinkedBlockingQueue;
 
@@ -77,8 +77,7 @@ public class AsyncFortunaStandalone extends FortunaStandalone implements Runnabl
     /** the seed is only propogated once the prng is started with startup() */
     @Override
     public void seed(byte val[]) {
-        Map props = new HashMap(1);
-        props.put(SEED, val);
+        Map props = Collections.singletonMap(SEED, val);
         init(props);
         //fillBlock();
     }

core/java/src/gnu/crypto/prng/FortunaStandalone.java

@@ -48,7 +48,7 @@ import java.io.Serializable;
 import java.security.InvalidKeyException;
 import java.security.MessageDigest;
 import java.util.Arrays;
-import java.util.HashMap;
+import java.util.Collections;
 import java.util.Map;
 
 import net.i2p.crypto.CryptixAESKeyCache;
@@ -131,8 +131,7 @@ public class FortunaStandalone extends BasePRNGStandalone implements Serializabl
   }
 
   public void seed(byte val[]) {
-      Map props = new HashMap(1);
-      props.put(SEED, val);
+      Map props = Collections.singletonMap(SEED, val);
       init(props);
       fillBlock();
   }