Use inc_hw_errors function at every site which increases hw_errors
inc_hw_errors: Resolve cgpu outside of mutex
Keep track of bad nonces independently from generic hw errors
percentf2 that takes t as precalculated total
Bugfix: modminer & x6500: Increment *->diff1 for all bad nonces
TUI: Display percentage invalid of found nonces with hw errors
Merge branch 'hwpercent' into bfgminer