strace: bump to version 4.13

strace: bump to version 4.13

Drop upstream patch.

Remove preseed of netlink.h and if_packet.h tests since these tests were
removed from configure.ac.

Add stronger sha256 hash.

Version 4.13 fixes a typo in configure.ac (commit 7c0e8875a432) that causes
build failure with kernel v4.7 headers, thus fixing:
http://autobuild.buildroot.net/results/aa6/aa6badae8b3d58d6d48161f261988103271bc2ef/
http://autobuild.buildroot.net/results/4ad/4ad1b0c42206243bd76e94b34454d4108fb31070/
http://autobuild.buildroot.net/results/1c6/1c6c88a7163529a666d1661969736f66e9aba7f7/

and more.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>