Trie query recording and AccountDB factory for no mangling (#1944)

* optionally use no mangling for accountdb

* add the recorder module

* get_recorded for tries, no virtual dispatch on readonly tries

* add recording test

ethcore/src/factory.rs

@@ -0,0 +1,30 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use util::trie::TrieFactory;
+use evm::Factory as EvmFactory;
+use account_db::Factory as AccountFactory;
+
+/// Collection of factories.
+#[derive(Default, Clone)]
+pub struct Factories {
+	/// factory for evm.
+	pub vm: EvmFactory,
+	/// factory for tries.
+	pub trie: TrieFactory,
+	/// factory for account databases.
+	pub accountdb: AccountFactory,
+}