* g10/export.c (do_export_stream): If a key is stored by the agent in
cleartext, then try to export it as cleartext.
* tests/openpgp/export.test: For secret keys that are stored in
cleartext, test should try to export without pinentry interaction.
--
This restores the behavior of GnuPG 2.0 and 1.4 when exporting
passphraseless secret keys, and fixes the test suite accordingly.
GnuPG-bug-id: 2070, 2324
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>