need for e_os.h.

This is especially important for AES that has a 16 bytes IV.

it's exported.  Changing that is a BIG step, which has been done in
0.9.7-dev.

Submitted by Ian Marsh <mushypea@dominion.net.uk>

'OpenSSL_0_9_6-stable'.

Notified by Oscar Jacobsson <oscar@jacobsson.org>

getting the bottommost one.  I hope I understood correctly how this
should be done.  It seems to work when running evp_test in an
environment where it can't find openssl.cnf.

Submitted by: Nils Larsch <nla@trustcenter.de>

0.9.7 now lives in the branch OpenSSL_0_9_7-stable.