This allows for opening of public key files. It does not, however,
support opening private keys (or decrypting/encrypting them). This is
due to limitations in the native API.
Nearly all public key tests pass (the native API doesn't support the
40-bit key in the test set). The private key tests are expected to fail.
Task-number: QTBUG-40688
Change-Id: Id8f2f1ae6526540736ceb2e5371f6a5d80c4ba7b
Reviewed-by: Richard J. Moore <rich@kde.org>
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>