Bugfix: Expand deprecated work->subid field to int width, needed by klondike driver for tracking work
Merge commit 'c7e6d1b' into bfgminer
klondike: Variablise max_work_count and old_work_ms
klondike: Allow setting max_work_count and max_work_time via set_device
klondike: Pre-initialise klninfo separately from probe
hashbusteravalon: Klondike-based metadriver
klondike: Explicitly enable slaves as well as the master