temporary BIGNUMs. BN_CTX still uses a fixed number of BIGNUMs, but
the BN_CTX implementation could now easily be changed.

used anywhere in OpenSSL, but might be used by libdes applications.

were fixed up. The catch is that in the DESX test the cbc2_key is used
as whitening key where *all* 64 bits are significant.

OpenSSL_add_all_algorithms(). Move these into
separate files so they work properly.

Add new -notext option to 'ca', -pubkey option to spkac.

Remove some "WTF??" casts from applications.

Fixes to keep VC++ happy and avoid warnings.

Docs tidy.

crypto/bn/bn_lcl.h for further details. It should be noted that for
the moment of this writing the code was tested only on Alpha. If
compiled with DEC C the C implementation exhibits 12% performance
improvement over the crypto/bn/asm/alpha.s (on EV56 box running
AlphaLinux). GNU C is (unfortunately) 8% behind the assembler
implementation. But it's OpenVMS Alpha users who *may* benefit most
as 'apps/openssl speed rsa' exhibits 6 (six) times performance
improvement over the original VMS bignum implementation. Where "*may*"
means "as soon as code is enabled though #define SIXTY_FOUR_BIT and
crypto/bn/asm/vms.mar is skipped."

primes (negligible for larger ones).

Submitted by: Martin Kraemer <martin.kraemer@mch.sni.de>