Add ECDH support.

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>

crypto/cryptlib.c

diff --git a/crypto/cryptlib.c b/crypto/cryptlib.c
index 9a7ed2c..b72f7fb 100644
--- a/crypto/cryptlib.c
+++ b/crypto/cryptlib.c
@@ -55,6 +55,11 @@
  * copied and put under another distribution licence
  * [including the GNU Public Licence.]
  */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECDH support in OpenSSL originally developed by 
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
 
 #include <stdio.h>
 #include <string.h>
@@ -105,7 +110,8 @@
 	"ui",
 	"ecdsa",
 	"ec",
-#if CRYPTO_NUM_LOCKS != 33
+	"ecdh",
+#if CRYPTO_NUM_LOCKS != 34
 # error "Inconsistency between crypto.h and cryptlib.c"
 #endif
 	};