Don't even show 'Attempting to restart' for devices that don't support it
ft232r: Silence warning about (never really) uninitalised variable use
icarus: Silence warning about (never really) uninitalised variable use in icarus_scanhash
json_rpc_call_completed: Silence incorrect type cast warning
Merge commit '00ec83f' into bfgminer-2.10.x
Silence unused result warnings for notifier_{read,wake}

Conflicts:
	util.c
Merge commit '87754b6' into bfgminer-2.10.x
Merge commit '825d883' into bfgminer-2.10.x
Merge commit 'f94f3c9' into bfgminer-2.10.x
Silence warnings about (never really) uninitalised variables
Fix warnings