bitcoin/bitcoin — pull request #3667 by gavinandresen (2014-02-13 15:43:35+00:00)
Title: Make qa/rpc-tests/ compatible with OSX

Reworked send.sh, so it works properly on my Mac (killall send.sh doesn't work, because the process name is 'bash' not 'send.sh').
So now send.sh writes a .send.pid file, and invoking it as send.sh -STOP (as the bitcoind -walletnotify) signals that PID.