Move repositories to 'repos/' subdirectory

This patch changes the top-level directory layout as a preparatory
step for improving the tools for managing 3rd-party source codes.
The rationale is described in the issue referenced below.

Issue #1082

repos/base-codezero/include/codezero/syscalls.h

@@ -0,0 +1,76 @@
+/*
+ * \brief  Aggregate Codezero syscall bindings
+ * \author Norman Feske
+ * \date   2010-02-16
+ */
+
+/*
+ * Copyright (C) 2010-2013 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _INCLUDE__CODEZERO__SYSCALLS_H_
+#define _INCLUDE__CODEZERO__SYSCALLS_H_
+
+/*
+ * Codezero headers happen to include the compiler's 'stdarg.h'. If this
+ * happened within the 'Codezero' namespace below, we would not be able to
+ * include 'stdarg.h' later on into the root namespace (stdarg's include guards
+ * would prevent this. Therefore, we make sure to include the file into the
+ * root namespace prior processing any Codezero headers.
+ */
+#include <stdarg.h>
+
+namespace Codezero { extern "C" {
+
+/* make Codezero includes happy */
+extern char *strncpy(char *dest, const char *src, __SIZE_TYPE__);
+extern void *memcpy(void *dest, const void *src, __SIZE_TYPE__);
+
+/*
+ * Work around the problem of C++ keywords being used as
+ * argument names in the Codezero API headers.
+ */
+#define new _new_
+#define virtual _virtual_
+#define printf(A, ...)
+
+#include <l4lib/macros.h>
+#include <l4lib/arch/arm/syscalls.h>
+#include <l4lib/arch/arm/syslib.h>
+#include <l4lib/ipcdefs.h>
+#include <l4lib/init.h>
+#include <l4lib/mutex.h>
+#include <l4/api/thread.h>
+#include <l4/api/irq.h>
+#include <l4lib/exregs.h>
+#include <l4/lib/list.h>  /* needed for capability.h */
+#include <l4/generic/capability.h>
+#include <l4/generic/cap-types.h>
+#include <l4/arch/arm/exception.h>
+#include <l4/arch/arm/io.h>
+
+#undef new
+#undef virtual
+#ifdef max
+#undef max
+#endif
+#undef printf
+} }
+
+namespace Codezero {
+
+	/**
+	 * Return thread ID of the calling thread
+	 */
+	inline int thread_myself()
+	{
+		struct task_ids ids = { 0, 0, 0 };
+		l4_getid(&ids);
+		return ids.tid;
+	}
+}
+
+#endif /* _INCLUDE__CODEZERO__SYSCALLS_H_ */