Fix history.
 * InboundMessageDistributor:
   - Don't discard an encrypted DSRM received
     down a tunnel, just strip the hashes like we do for unencrypted
   - Send a store of our own encrypted LS received down a tunnel to
     the InNetMessagePool so the FloodfillVerifyStoreJob will see it.
 * NetDB: Fix LS store verifies with encrypted replies
   by storing the tagset with the correct SKM for the inbound tunnel used.
   Broken since 0.9.7 when it was introduced.
 * Tunnels:
   - Build a new exploratory fallback tunnel in the BuildExecutor
     loop if we run out.
   - Don't use closest expl. tunnel as the paired tunnel for a build,
     use a random one instead (partially back out change from -12)
   - Log tweaks
Log tweaks and minor cleanups, -15
merge of '2c288e0ac5d4a6039b3f08e6bbae9439bb038955'
     and 'fa8975b2dbcb60d5f181bc21fc1245d5f82baef0'
 * i2psnark: Fix start and start-all buttons on text-mode browsers
   and Opera (ticket #1093)
* i2psnark: Start torrents by default (ticket #1072)