Mark gpgEx dependencies as SPGKEX packages
This enables the new additional host logic for those packages. * configure.ac: Switch iconv / gettext to source packages and mark them as SPKGEX packages. Mark gpgEx dependencies as such. * packages/packages.current: Update libiconv and gettext and switch to source tarballs. * src/Makefile.am: Add iconv / gettext as source packages. Add gpgEx depdencies as gpg4win_expkgs
- gettext-tools are still resisting compilation. For now I've manually stepped in the build process to just build gettext-runtime. libiconv and w32-pth work as intended in the new extra architecture logic.