FFI finalizers can fire in unspecified orders, but for MuPDF,
we need to ensure that the context is the *very* last thing that get
destroyed.
As such, we need to make sure we close open documents properly on our
end, first.
This prevents potential crashes while switchign to USBMS inside an open
document handled by MuPDF.
Fix#7428
As things were, when I activated USBMS, any bookmarks recently added and not yet stored in the sidecar file would be lost after returning to the reader. These changes fix that.
* Enable i18n in KoboUSBMS
* Rejig the "No confirmation" USBMS setting:
In now *only* affects the USB plug in event.
The menu entry will never show the popup (clicking on it should already
be confirmation enough, that, yes, we really would like to do that,
please ;)).
Also, enable said plug in behavior on Cervantes, too ;).
* Add an option to disable USBMS entirely
* Bump base
https://github.com/koreader/koreader-base/pull/1170
