Loopback bugfix for 8-bit characters.
mozilla2john was not being built in an autoconf build. Closes #743.
Optimize sha256-opencl further.
Fix an error in sha256crypt-opencl. Now it passes JtR-TestSuite.
Small tweaks.
Increase HASH_LOOPS for sha256crypt-opencl.
Remove commented code.
Autotune for sha256crypt-opencl (it is fast enough).