Merge pull request #6 from KlausT/windows

x14_shabal and x15_whirlpool changes
shavite part 2: precalculated and removed 8 rounds of aes
faster X13(use byteperm to remove register spills)
fixed x13
cleanup x13
x11 cleanup
Merge branch 'windows' of https://github.com/sp-hash/ccminer into windows