Clean up CKey and RippleAddress (RIPD-672)

* Remove CKey dependency on RippleAddress
* Create RAII ec_key wrapper that hides EC_KEY and other OpenSSL details
* Move CKey member logic into free functions
* Delete CKey class
* Rename units that are no longer CKey-related
* Delete code that was unused

src/ripple/crypto/GenerateDeterministicKey.h

@@ -0,0 +1,40 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2011 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef RIPPLE_CKEYDETERMINISTIC_H
+#define RIPPLE_CKEYDETERMINISTIC_H
+
+#include <ripple/crypto/ec_key.h>
+#include <ripple/types/base_uint.h>
+#include <openssl/bn.h>
+
+namespace ripple {
+
+openssl::ec_key GenerateRootDeterministicKey (const uint128& passPhrase);
+openssl::ec_key GeneratePublicDeterministicKey (Blob const& generator, int n);
+openssl::ec_key GeneratePrivateDeterministicKey (Blob const& family, const BIGNUM* rootPriv, int n);
+
+} // ripple
+
+#endif