Provide backports of uthash LL_{PREPEND,FOREACH{,_SAFE}}2 (only added in 1.9.7, not yet in major distros)
Upgrade required uthash version to 1.9.4 for LL_CONCAT
Merge commit '4d98f04' into bfgminer
Merge branch 'uniscan2' into bfgminer