package/libdvdnav: bump version to 5.0.3

package/libdvdnav: bump version to 5.0.3

Removed 0001-fix-os2-support.patch, not needed anymore after the
version bump according to Thomas' note in the patch file.

Removed autoreconf, a configure script is now part of the upstream
tarball.

The script dvdnav-config was removed:
https://code.videolan.org/videolan/libdvdnav/commit/1de99510f507e4d84a658411605dd6424466d7b5

libdvdnav uses pkg-config to find libdvdread, therefore remove
--with-dvdread-config:
https://code.videolan.org/videolan/libdvdnav/commit/5254b5d7ad9c10b48c97ce72a1b8bf7aef54b12c

Changed LIBDVDNAV_SITE according to the news post dating 13 Feb 2014
from http://dvdnav.mplayerhq.hu/

Enabled static build, tested using this defconfig:
http://autobuild.buildroot.net/toolchains/configs/br-arm-full-static.config

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