The original patch function is replaced with a patchset. Instead, patch a hardcoded include path via the patch function.
TODO: additional_cflags in ConfigData are still wrong (they use the wrong include paths).
They should be fixed or removed if not needed.
TODO: determine if the 'build_*' entries in ConfigData are needed.
If not, this could maybe be changed to an 'any' arch package.
(By default, this calls the `sdl-config` script from SDL anyway, so it depends on the environment
whether secondaryArch will be used or not.)
