warning when using gcc 4.0

PR: 1073

compiled into *our* aplpications. That's because mingw is always
consistent with itself. Having library-side code linked into .dll
makes it possible to deploy the .dll with user-code compiled with
another compiler [which is pretty much the whole point behind Applink].

The 0.9.8 branch is called OpenSSL_0_9_8-stable.

PR: 1070

first everywhere in crypto and skip stdio.h and string.h [because it
includes them].

[most importantly] put back dependencies accidentaly eliminated in
check-in #13342.

- hide the EC_KEY structure definition in ec_lcl.c + add
  some functions to use/access the EC_KEY fields
- change the way how method specific data (ecdsa/ecdh) is
  attached to a EC_KEY
- add ECDSA_sign_ex and ECDSA_do_sign_ex functions with
  additional parameters for pre-computed values
- rebuild libeay.num from 0.9.7

timing attacks.

BN_FLG_EXP_CONSTTIME requests this algorithm, and this done by default for
RSA/DSA/DH private key computations unless
RSA_FLAG_NO_EXP_CONSTTIME/DSA_FLAG_NO_EXP_CONSTTIME/
DH_FLAG_NO_EXP_CONSTTIME is set.

Submitted by: Matthew D Wood
Reviewed by: Bodo Moeller

attribute in EVP_PKEY structure.

is made to directly cast a function of one type to what it considers and
incompatible type. In particular gcc 3.4.2.

Add new openssl_fcast macro to place functions into a form where the compiler
will allow them to be cast.

The current version achives this by casting to: void function(void).

(previous revision got this wrong)

with the SSL_OP_NO_SSLv2 option.