gcr/gnome-keyring don't handle the case where prompt_password_async()/
prompt_confirm_async() return their result from within the function
very well (or rather: break badly). Calling gcr_prompt_close() instead
is safe, but to avoid these kind of errors in the future, modify
shell_keyring_prompt_cancel() to work as expected in this case.
https://bugzilla.gnome.org/show_bug.cgi?id=708187
Some callers of the keyring prompt keep the dialog up while
processing the prompt. Allow the user to cancel the prompt
while in this state.
This is propagated to the caller, who can cancel the operation
in question when this occurs.
https://bugzilla.gnome.org/show_bug.cgi?id=682830
* Add a keyring prompter based on GcrSystemPrompter
* Adds dependency on gcr version 3.3.5 or higher
* Not yet using unmerged support for non-pageable memory
https://bugzilla.gnome.org/show_bug.cgi?id=652459