Disable assembler version of SHA512 for now, it produces wrong results.
Reenable assembler code for SHA384 and SHA512 now that it no longer miscomputes
things. Worth doing as it's twice faster than the C code.
Correctly enable assembler Montgomery routine.
Correctly enable assembler Montgomery routine.
Enable assembler bits for BN (Montgomery), SHA1 and SHA256.
Assembler bits for AES remain commented out as they run slower than the C code.
Correctly enable Montgomery code.
Enable assembler code for AES, BN (Montgomery), GCM128, SHA1, SHA256 and SHA512.
Note that GCM128 Neon code is currently not built (and thus not tested), as
the current toolchain does not support Neon instructions.
Enable assembler code for AES, DES, GCM, SHA1, SHA256 and SHA512.

The sparcv9 BN code is not enabled, as it expects to run on a 32-bit
userland and will need to be fixed for 64-bit userland first.