Remove bitfury devices from the usb list on shutdown in case they have stopped responding but have not had a fatal usb error.
ANU frequency is in MHz, not hex.
Merge pull request #546 from kanoi/master

Allow running cgminer in benchmark mode with a work file --benchfile
Merge pull request #548 from kanoi/master

miner.php auto naming and size reduction for a large number of rigs
Add driver for cointerra devices.
Merge branch 'master' of github.com:ckolivas/cgminer