sci-libs/gdal: Bump to v2.0.3

sci-libs/gdal: Bump to v2.0.3

 - Version bump to new upstream release v2.0.3.

 - Bumped to EAPI=6.

 - Enabled python3_5 support.

 - "oracle" USE flag added (Fixes Gentoo-Bug #585156).

 - Fixes a build issue when using "java" USE flag and you have a JRE
   installed (patch for gdal provided by James Le Cuirot, thanks!).

 - MDB driver now uses new dev-java/jackcess pack (patch for gdal provided
   by James Le Cuirot, thanks!)

 - Switched JPEG-2000 provider from media-libs/jasper to
   media-libs/openjpeg:2 because JasPer is unmaintained and vulnerable.

Gentoo-Bug: https://bugs.gentoo.org/585156

Closes: https://github.com/gentoo/gentoo/pull/2106

Package-Manager: portage-2.3.2