Avoid enabled 'assert()' in production library.

algorithm is used.

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

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.

pages into one for improved readability, add lhash manpage

(including another problem in the s3_srvr.c state machine).

New function BN_pseudo_rand().
Use BN_prime_checks_size(BN_num_bits(w)) rounds of Miller-Rabin when
generating DSA primes (why not use BN_is_prime()?)

Clean up bn_mont.c.