Bugfix: Fix build with libblkmaker < 0.2
Merge commit 'a705ab3' into bfgminer
RPC: Avoid exposing Coinbase-Sig when it isn't supported
Merge commit '81b88e3' into bfgminer

Conflicts:
	miner.c
Remove long-unused opt_time variable
Merge commit '1b49cbf' into bfgminer
Bugfix: Avoid trying to assign const use_unicode variable with --no-unicode option
Merge branch 'unicode' into bfgminer