Tidy up the structure of sources in protocol/:

Split out and rename STValidation
Split out and rename STBlob
Split out and rename STAccount
Split out STPathSet
Split STVector256 and move UintTypes to protocol/
Rename to STBase
Rename to STLedgerEntry
Rename to SOTemplate
Rename to STTx
Remove obsolete AgedHistory
Remove types.h and add missing includes
Remove unnecessary includes in app.h
Remove unnecessary includes in app.h
Remove include app.h from app1.cpp

src/ripple/protocol/impl/STAccount.cpp

@@ -0,0 +1,68 @@
+//------------------------------------------------------------------------------
+/*
+    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.
+*/
+//==============================================================================
+
+#include <ripple/protocol/STAccount.h>
+
+namespace ripple {
+
+std::string STAccount::getText () const
+{
+    Account u;
+    RippleAddress a;
+
+    if (!getValueH160 (u))
+        return STBlob::getText ();
+
+    a.setAccountID (u);
+    return a.humanAccountID ();
+}
+
+STAccount*
+STAccount::construct (SerializerIterator& u, SField::ref name)
+{
+    return new STAccount (name, u.getVL ());
+}
+
+STAccount::STAccount (SField::ref n, Account const& v) : STBlob (n)
+{
+    peekValue ().insert (peekValue ().end (), v.begin (), v.end ());
+}
+
+bool STAccount::isValueH160 () const
+{
+    return peekValue ().size () == (160 / 8);
+}
+
+RippleAddress STAccount::getValueNCA () const
+{
+    RippleAddress a;
+    Account account;
+
+    if (getValueH160 (account))
+        a.setAccountID (account);
+
+    return a;
+}
+
+void STAccount::setValueNCA (RippleAddress const& nca)
+{
+    setValueH160 (nca.getAccountID ());
+}
+
+} // ripple