Bug#806445:

[Kjö Hansi Glaz]

> 3. "Sign This Key" (whatever option I choose)
>   * 8.2: General Error
>   * stretch: General Error
>   * stretch + patch: General Error

This last line is wrong:

3. "Sign This Key" (whatever option I choose)
   * stretch + patch: OK

According to more tests, I *can* sign keys with the patch under sid and
stretch, while I can't without.

However, even without the patch, I can't add subkeys.