Increase fd limits as much as possible at startup
Merge commit 'c4105a6' into bfgminer

Conflicts:
	miner.c
Bugfix: opencl: Correct usage of formatted prints
Merge commit '0ade1c4' into bfgminer
Bugfix: opencl/adl: Fix format string
Merge commit '60de6c8' into bfgminer