Update self tests for all modes and use EVP.

Update pairwise consistency checks.

Make DSA tests, selftests and algorithm tests use EVP.

sources.

Submitted by: Andy Polyakov

and avoid the need for ld.exe.

0_9_8-stable'.

Note: the RAND_bytes() manual page says:
 RAND_bytes() puts num cryptographically strong pseudo-random bytes into buf.
It does not talk about using the previous contents of buf so we are working
as documented.

code checking tools.
PR: 1499

EVP_CIPHER_CTX structure which may not be the same as the underlying
cipher key length for variable length ciphers.