Massive refactoring of all code + audio skeleton.

This should make it easier to find files and (in the future) split things
up into separate libraries.
It also changes around emulator initialization to make it a little more
difficult to do things out of order and a little more sensible as to when
real init work happens.
Also adding a skeleton audio system/driver and reworking CPU register
access to be more extensible.

src/xenia/gpu/xenos/sources.gypi

@@ -5,7 +5,6 @@
     'register_table.inc',
     'registers.cc',
     'registers.h',
-    'ucode.cc',
     'ucode.h',
     'ucode_disassembler.cc',
     'ucode_disassembler.h',

src/xenia/gpu/xenos/ucode.cc

@@ -1,15 +0,0 @@
-/**
- ******************************************************************************
- * Xenia : Xbox 360 Emulator Research Project                                 *
- ******************************************************************************
- * Copyright 2013 Ben Vanik. All rights reserved.                             *
- * Released under the BSD license - see LICENSE in the root for more details. *
- ******************************************************************************
- */
-
-#include <xenia/gpu/xenos/ucode.h>
-
-
-using namespace xe;
-using namespace xe::gpu;
-using namespace xe::gpu::xenos;