package/opencv: bump version to 2.4.13.3

package/opencv: bump version to 2.4.13.3

Removed 0002-avoid-sysctl_h.patch, applied upstream:
https://github.com/opencv/opencv/commit/61936eb1a43e732e4bc1c75b63e6cab85c6f9e94#diff-f3b4393df86251f502cee9ba1da034a5

This bump includes
https://github.com/opencv/opencv/commit/70489b1e2232ead1701519e35d151670b74c3f70#diff-9076fba682f6d51a018b6de8648e1cdb
which fixes ffmpeg static linking
http://autobuild.buildroot.net/results/544/5444b0c5556a42923e3fcdae782811a805e51b1f/
http://autobuild.buildroot.net/results/44d/44d53e4c5d4570507c7e8856fb9dd0a477dcdf63/

In-source-builds are not allowed anymore:
https://github.com/opencv/opencv/commit/777a0080cbdb98761853519b3f45136727a855c2

Re-numbered remaining patches.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>