cgminer: 4.9.0-1~getdeb1

  * New upstream version
    - Minor fix
    - Fix MM41 voltage setting
    - Fix the default settings of new module
    - Count non matching stratum as a hw error on ava4
    - Fix ava4 build incompatibilites and missing write config parameters
    - Use strcasecmp for device matching in usbutils in case of subtle
    manufacturer changes
    - Add manufacturer and product definitions for ava4
    - Cosmetic ava4 change
    - Cosmetic ava4 message fixes
    - Add sanity check for NULL data being passed to usb_perform_transfer
    - All write errors should be treated as fatal for ava4 devices
    - Change initial fan start speed, mins and max for avalon4 to ensure fan
    starts spinning but can go lower RPM
    - Disable zero length packets on ava4 before trying to init
    - Add a cgpu device option to disable zero length packets and enable it
    for avalon4
    - Display ava4 stats consistent with other devices
    - Add ava4 to udev rules file
    - Fix build warnings on ava4
    - Fix ava4 build
    - Add Avalon4 support
    - Filter duplicate stratum shares from being submitted upstream
    - Do rudimentary detection of duplicate shares per device