[NaCL SDK] Ship sys/mount.h for newlib/pnacl.

native_client_sdk/src/libraries/nacl_io/include/sys/mount.h

Index: native_client_sdk/src/libraries/nacl_io/include/sys/mount.h
diff --git a/native_client_sdk/src/libraries/nacl_io/include/sys/mount.h b/native_client_sdk/src/libraries/nacl_io/include/sys/mount.h
new file mode 100644
index 0000000000000000000000000000000000000000..dde0ab3896435794c23cdb9e92f727668dabd96e
--- /dev/null
+++ b/native_client_sdk/src/libraries/nacl_io/include/sys/mount.h
@@ -0,0 +1,19 @@
+/* Copyright (c) 2013 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
+#ifndef LIBRARIES_NACL_IO_INCLUDE_SYS_MOUNT_H
+#define LIBRARIES_NACL_IO_INCLUDE_SYS_MOUNT_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+int mount(const char* source, const char* target, const char* filesystemtype,
+          unsigned long mountflags, const void *data);
+
+int umount(const char *target);
+
+__END_DECLS
+
+#endif  /* LIBRARIES_NACL_IO_INCLUDE_SYS_MOUNT_H */