* Added some I2PSnark sanity checks, an OOMListener when running
standalone, and a guard against keeping memory tied up indefinitely.
* Sanity check on the watchdog (thanks zzz!)
* Handle invalid HTTP requests in I2PTunnel a little better
* Moved I2PSnark from using Threads to I2PThreads, so we handle OOMs
properly (thanks Complication!)
* More guards in I2PSnark for zany behavior (I2PSession recon w/ skew,
b0rking in the DirMonitor, etc)
* Added multitorrent support to I2PSnark, accessible currently by running
"i2psnark.jar --config i2psnark.config" (which may or may not exist).
It then joins the swarm for any torrents in ./i2psnark/*.torrent, saving
their data in that directory as well. Removing the .torrent file stops
participation, and it is currently set to seed indefinitely. Completion
is logged to the logger and standard output, with further UI interaction
left to the (work in progress) web UI.
