Refresh configs for 3.16.3

Signed-off-by: David Sterba <dsterba@suse.cz>
Enable stack protector again

Set buffer size to 4.

Signed-off-by: David Sterba <dsterba@suse.cz>
Add grsecurity-3.0-3.16.3-201409180901.patch

Signed-off-by: David Sterba <dsterba@suse.cz>
series.conf: enable grsecurity-3.0-3.16.3-201409180901.patch
Refresh grsec patch

Signed-off-by: David Sterba <dsterba@suse.cz>