P2Pool release 3.0 tag: 3.0 hash: a4cde222d397b47ae5646ca74a8036025d745df8

EDIT: Outdated, go to https://bitcointalk.org/index.php?topic=18313.msg971005#msg971005

Changes:
* P2Pool will "skip ahead" to building on blocks not yet processed by the local bitcoind based on block headers received from P2Pool peers. This should significantly reduce the number of orphaned blocks we have if everyone upgrades.
* Latency/high CPU usage caused by requesting shares from old nodes is fixed by now not downloading shares more than a day old

This change increments the share version to 3, so once 50% of people upgrade, the rest will be notified by messages on their P2Pool console. So, please upgrade! Note that this isn't a hard fork of the P2Pool chain, so old nodes will continue to work, only spamming the upgrade messages.