libnftnl: update from 1.0.3 to 1.0.5

Update libnftnl from 1.0.3 to 1.0.5 (for Changelog see
http://git.netfilter.org/libnftnl/log/

)

Signed-off-by: Jens Rehsack <sno@netbsd.org>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>