- Really fix IPv6-only option
   - Treat RFC 4193 addresses fc00::/7 as local
   - Log tweaks, javadocs

     and 'f5d75b2ebc648c43182d685f30e96242e43caa69'

   - Prefer IPv6 by default
   - Fix IPv6-only option
   - Don't try NTCP IPv6 addresses unless we have one
   - Fix non-%16 SSU padding in data and session confirmed packets; enable by default
   - Log tweaks

   - Make expl. default 3 hops  (ticket #966)
   - Allow expl. fallback up to -2 hops

   - Don't pollute Hash cache with hashes
   - cleanups, less object churn

   - Make non-static
   - Don't pollute Hash cache with build response record hashes
   - Use SimpleByteCache
   - cleanups

   - Oops, must enforce property length limits even when inside router JVM
     as the properties are serialized for signing.

 * I2CP:
   - Don't NPE when loglevel=warn
   - Don't enforce property length limits when inside router JVM
 * I2PSnark: Log uncaught error in ThreadedStarter to router log
 * I2PThread: Log uncaught error to wrapper log

	trac ticket #972
	up version to -4

            to branch 'i2p.i2p' (head 7af6987d5546664f76589afe0cbeeb780f4b5d58)

            to branch 'i2p.i2p' (head e8b712c826e44211217f06eb3a4da2703323a42f)

   - Don't delay the refiller if we need more (don't limit max output)
   - Add FortunaRandomSource.main() to output to stdout for testing e.g. with dieharder

     and 'fa509893effa9445a0833115160aed8fe6fed268'

	Various suggestions by zzz