ENGINE module additions.

Add "init" command to control ENGINE
initialization.

Call ENGINE_finish on initialized ENGINEs on exit.

Reorder shutdown in apps.c: modules should be shut
down first.

Add test private key loader to openssl ENGINE: this
just loads a private key in PEM format.

Fix print format for dh length parameter.

Submitted by: Nils Larsch

moment at least), so remove it

  [Chosen plaintext attack: R. Merkle, M. Hellman: "On the Security of
  Multiple Encryption", CACM 24 (1981) pp. 465-467, p. 776.

  Known plaintext angriff: P.C. van Oorschot, M. Wiener: "A
  known-plaintext attack on two-key triple encryption", EUROCRYPT '90.]

Submitted by: Nils Larsch

Make sure the type accessed by the LONG and ZLONG ASN1 type
is really a long, to avoid problems on platforms where
sizeof(int) != sizeof(long).

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

OPENSSL_DES_PRE_0_9_7_COMPATIBILITY is defined.  NOT AT ALL TESTED YET!
Add a comment as to the libdes compatibility.

line, which I forgot when spliting one.

Fix warnings about signed/unsigned mismatch and global
shadowing (random, index) in hw_4758_cca.c

very broken, and there are working modules in CPAN, which makes our
module even more moot.

any other errors that may be left in the error queue

Submitted by: Jeffrey Altman

consistent with the rest of the AEP functions

Increase internal security when using strncpy, by making sure the resulting string is NUL-terminated

Submitted by: D. K. Smetters <smetters@parc.xerox.com>
Reviewed by: Bodo Moeller

Gittens.

0.9.7-stable.

Fix new -aes command argument handling

Make the engine config module always add dynamic ENGINEs
to the list using dynamic_path. This stops ENGINEs which
don't supply any default algorithms being automatically
freed (because they have no references) and allows them
to be accessed by id.

Alternative dynamic loading behaviour can be achieved by
issuing the dynamic ENGINE ctrls separately in the config file.