Restructure the project to match new modular layout.

include/boost/predef/os.h

@@ -0,0 +1,27 @@
+/*
+Copyright Redshift Software, Inc. 2008-2012
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#ifndef BOOST_PREDEF_OS_H
+#define BOOST_PREDEF_OS_H
+
+#include <boost/predef/os/aix.h>
+#include <boost/predef/os/amigaos.h>
+#include <boost/predef/os/beos.h>
+#include <boost/predef/os/bsd.h>
+#include <boost/predef/os/cygwin.h>
+#include <boost/predef/os/hpux.h>
+#include <boost/predef/os/irix.h>
+#include <boost/predef/os/linux.h>
+#include <boost/predef/os/macos.h>
+#include <boost/predef/os/os400.h>
+#include <boost/predef/os/qnxnto.h>
+#include <boost/predef/os/solaris.h>
+#include <boost/predef/os/unix.h>
+#include <boost/predef/os/vms.h>
+#include <boost/predef/os/windows.h>
+
+#endif