Add regression test for bug #10229 - No access check verification on stream files.

Add regression test for bug #10229 - No access check verification on stream files.

Checks against a file with attribute READONLY, and
a security descriptor denying WRITE_DATA access.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: David Disseldorp <ddiss@suse.de>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Nov  4 23:10:10 CET 2013 on sn-devel-104
(cherry picked from commit 65882152cc7ccaba0e7903862b99ca93594ed080)

The last two patches address bug #10235 - CVE-2013-4475: No access
check verification on stream files.