Put bloc height extraction in a function
Tune reg. count for qubit (luffa) algos
Add cuda error checks on qubit algos

And rename doom to luffa, like djm34
blake: +8MH/s on linux, weird optimisation

Like doom/luffa, using a int pos make the proc faster
blake: final cleanup (225MH/s)
stratum: check if job was read
blake: only use high part of target on gpu

Add another few MH/s boost :)
Prepare skein algo (cpu part)
Skein512 gpu hash (to test)
blake: remove int cudaMemcpyToSymbol for MSVC

use clz (leading zeros) asm func for a fast gpu compare of ptarget[6]:[7]

New NEOS speed: 230MH to 270MH (Gigabyte 750Ti Black Edition)