Cleanup the Makefiles.
* Makefile.am (EXTRA_DIST): Remove removed patch. (download): Remove packages.{3.4}. * packages/Makefile.am (EXTRA_DIST): Ditto. Remove get-gpg-package.sh. Add gen-gnupg.sh. * packages/get-gpg-package.sh: Remove. * packages/distsigkey.gpg: Update from gnupg master.
Note that get-gpg-package.sh has been been replaced some time ago by
gen-gnupg.sh but that was not included in the distributed tarballs.