Applicatiuon name support

[ralsina]

Hello,

When I use keyring with the KWallet backend, it stores the passwords
in a folder called "python". That's (I think) because of the way it
constructs the QApplication in the backend.

Could that be made configurable, so passwords are saved in a folder
identified by the app name?

I think the same issue happens with the gnome-keyring backend, where
you need to call a gtk function to set the app name.