Added CAudioDevice and cleaning up IVoice

refs #36
- Added a common class CAudioDevice encapsulating each audio device
- One subclass for input and output devices
- Changed IVoice interface slightly to better fit into the event flow

refs #81

src/blackmisc/vvoiceroom.cpp

@@ -1,3 +1,12 @@
+/* Copyright (C) 2013 VATSIM Community / authors
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*!
+    \file
+*/
+
 #include "vvoiceroom.h"
 #include "blackmisc/blackmiscfreefunctions.h"