TUI: Implement beginnings of generic device management interface
TUI: Add enable/disable commands to device management
DevAPI: New function called to display additional processor information for "Manage devices"
DevAPI: Add interface for drivers to define custom "Manage device" options
opencl: Use new "Manage device" interface to do everything "GPU management" used to be used for
Remove "GPU management" TUI entirely
opencl: ManageTUI: Clear log cleanly for changing settings
Merge branch 'tui_manage_dev' into bfgminer