increase SimpleByteCache default size.

  - Centralize priority definitions
  - Raise netdb store and reply priority
GarlicMessage:
  - Add notes about GarlicMessageHandler and HandleGarlicMessageJob
    being unused in practice

  - Limit queue sizes
  - Add stat for overflow
  - Remove some stats
  - Change pumper to LinkedHashSet for efficiency
    (like NTCP Reader/Writer)
  - Limit messages pumped per cycle to increase
    round-robin fairness
  - Comment out some unused code
  - Javadoc

  - Add logging of drops
  - Set drop stat to delay of dropped item
  - Add no-drop priority

  - Override poll() and drainTo()
  - Tweak stats
  - Add PriorityBlockingQueue version

    - Move all remaining uses to SimpleTimer2
    - Deprecate

            to branch 'i2p.i2p.zzz.test' (head 096242c22aa550274cb383a6a0c984cef07ae08c)

Use for stops, starts, and updates, and others.
Mark all restarts on graphs using the event log.

                Include test case

   - Add new flood-resistant KBucket trim policy
   - Limit received MsgID size

   - Limit UDPSender queue size
   - Increase UDPSender max packet lifetime
   - Clear UDPSender queue before sending destroys to all
   - Increase PeerState queue size so large streaming windows
     don't get dropped right away, especially at slow start
   - Various improvements on iterating over pending outbound
     messages in PeerState

  Compiled on trimslice:
    gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4) 
    java version "1.6.0_18"
    OpenJDK Runtime Environment (IcedTea6 1.8.13) (6b18-1.8.13-0ubuntu1~11.04.1)
    OpenJDK Zero VM (build 14.0-b16, mixed mode)
    Wrapper 3.5.15 GPLv2
    All binaries stripped.

 - Windows: Self-compiled with VS2010 in Windows 7. The icon has been
   changed from Tanuki's default to Itoopie.
 - FreeBSD: Self-compiled in FreeBSD 7.4 to eliminate the dependency on the
   compat6x port.
 - Linux ARMv5 & PPC32: Self-compiled in Debian Squeeze
 - Linux x86, Linux x64, MacOSX & Solaris: Binares are from the "community
   edition" deltapack offered by Tanuki. The x86 and x64 binaries for Linux
   have been stripped.

                       table lookup for more flexibility
 * Streaming: Use packet type and current window size to adjust
              number of tags sent and tag threshold, to improve
              efficiency and reliability