Changed magic in testnet
Upgraded protocol version
Make RPC password resistant to timing attacks
Thanks to Gavin, https://github.com/bitcoin/bitcoin/pull/2886
More I2P Patching
Setting the client version
Only create signatures with even S, and verification mode to check.
To fix a minor malleability found by Sergio Lerner (reported here: https://bitcointalk.org/index.php?topic=8392.msg1245898#msg1245898)

Thanks to Sipa, https://github.com/bitcoin/bitcoin/pull/2131