Let 9 more formats report tunable cost values

sha256crypt
sha256crypt-cuda
sha256crypt-opencl
sha512crypt
sha512crypt-cuda
sha512crypt-opencl
PBKDF2-HMAC-SHA256
PBKDF2-HMAC-SHA256-opencl
SunMD5
Merge pull request #559 from frank-dittrich/bleeding-jumbo

Let 9 more formats report tunable cost values