* Makefile.am: Build the test infrastructure on Windows.
* tests/openpgp/Makefile.am (required_pgms): Add gpgscm.
(TESTS_ENVIRONMENT): Make sure gpgscm and the libraries are found.
(TESTS): Replace tests with the new Scheme implementations.
* tests/openpgp/4gb-packet.scm: New file.
* tests/openpgp/README: Likewise.
* tests/openpgp/armdetach.scm: Likewise.
* tests/openpgp/armdetachm.scm: Likewise.
* tests/openpgp/armencrypt.scm: Likewise.
* tests/openpgp/armencryptp.scm: Likewise.
* tests/openpgp/armor.scm: Likewise.
* tests/openpgp/armsignencrypt.scm: Likewise.
* tests/openpgp/armsigs.scm: Likewise.
* tests/openpgp/clearsig.scm: Likewise.
* tests/openpgp/conventional-mdc.scm: Likewise.
* tests/openpgp/conventional.scm: Likewise.
* tests/openpgp/decrypt-dsa.scm: Likewise.
* tests/openpgp/decrypt.scm: Likewise.
* tests/openpgp/default-key.scm: Likewise.
* tests/openpgp/defs.scm: Likewise.
* tests/openpgp/detach.scm: Likewise.
* tests/openpgp/detachm.scm: Likewise.
* tests/openpgp/ecc.scm: Likewise.
* tests/openpgp/encrypt-dsa.scm: Likewise.
* tests/openpgp/encrypt.scm: Likewise.
* tests/openpgp/encryptp.scm: Likewise.
* tests/openpgp/finish.scm: Likewise.
* tests/openpgp/genkey1024.scm: Likewise.
* tests/openpgp/gpgtar.scm: Likewise.
* tests/openpgp/import.scm: Likewise.
* tests/openpgp/mds.scm: Likewise.
* tests/openpgp/multisig.scm: Likewise.
* tests/openpgp/run-tests.scm: Likewise.
* tests/openpgp/seat.scm: Likewise.
* tests/openpgp/setup.scm: Likewise.
* tests/openpgp/signencrypt-dsa.scm: Likewise.
* tests/openpgp/signencrypt.scm: Likewise.
* tests/openpgp/sigs-dsa.scm: Likewise.
* tests/openpgp/sigs.scm: Likewise.
* tests/openpgp/use-exact-key.scm: Likewise.
* tests/openpgp/verify.scm: Likewise.
* tests/openpgp/version.scm: Likewise.