[packagekit] backend initialized multiple times when using pk-application

[Andreas]

Hi
When using pk-application, the backend initializer function gets called
more then once before the destroy function is called. That's a bug I
guess. It makes the alpm backend crash because it has to initialize some
stuff which must be guaranteed to only be initialized once at a time (of
course you could work arround this).
I can't see the problem in pk-application. Can you have a look at it?
Shouldn't even pakagekitd itself make sure when and how often this
function is called?

Regards,
	Andreas