EC_GROUP_new_by_nid() should be enough.  This avoids a lot of
redundancy.

Submitted by: Nils Larsch

Additional changes:
 - use EC_GROUP_get_degree() in apps/req.c
 - add ECDSA and ECDH to apps/speed.c
 - adds support for EC curves over binary fields to ECDSA
 - new function EC_KEY_up_ref() in crypto/ec/ec_key.c
 - reorganize crypto/ecdsa/ecdsatest.c
 - add engine support for ECDH
 - fix a few bugs in ECDSA engine support

Submitted by: Douglas Stebila <douglas.stebila@sun.com>

Submitted by: Nils Larsch

This is not ECDSA specific, so it's now PEM_STRING_ECPRIVATEKEY etc.

Submitted by: Nils Larsch <nlarsch@compuserve.de>

(the same keys can be used for ECC schemes other than ECDSA)
and add some new options.

Similarly, use string "EC PARAMETERS" instead of "ECDSA PARAMETERS"
in 'PEM' format.

Fix ec_asn1.c (take into account the desired conversion form).

'make update'.

Submitted by: Nils Larsch

Submitted by: Nils Larsch
Reviewed by: Bodo Moeller

and make some appropriate changes to the EC library.

Submitted by: Nils Larsch