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/kernel/xam/xam_private.h

@@ -0,0 +1,46 @@
+/**
+ ******************************************************************************
+ * 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. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_KERNEL_XAM_PRIVATE_H_
+#define XENIA_KERNEL_XAM_PRIVATE_H_
+
+#include <xenia/common.h>
+#include <xenia/core.h>
+
+#include <xenia/kernel/xam/xam_ordinals.h>
+
+
+namespace xe {
+namespace kernel {
+namespace xam {
+
+class XamState;
+
+
+// This is a global object initialized with the XamModule.
+// It references the current xam state object that all xam methods should
+// be using to stash their variables.
+extern XamState* shared_xam_state_;
+
+
+// Registration functions, one per file.
+void RegisterContentExports(ExportResolver* export_resolver, XamState* state);
+void RegisterInfoExports(ExportResolver* export_resolver, XamState* state);
+void RegisterInputExports(ExportResolver* export_resolver, XamState* state);
+void RegisterNetExports(ExportResolver* export_resolver, XamState* state);
+void RegisterUserExports(ExportResolver* export_resolver, XamState* state);
+void RegisterVideoExports(ExportResolver* export_resolver, XamState* state);
+
+
+}  // namespace xam
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_XAM_PRIVATE_H_