message checksum between nodes with 0.2.9 or higher,
optimization level up from -O0 to -O2,
rpc functions: setlabel, getlabel, getaddressesbylabel, getreceivedbyaddress, getreceivedbylabel, listreceivedbyaddress, listreceivedbylabel
-- version 0.2.9
added SetBitcoinAddress and GetBitcoinAddress methods on CScript,
critsect interlocks around mapAddressBook,
added some random delays in tx broadcast to improve privacy,
now compiles with MSVC 8.0