Silly problem with dive sites and GPS downloading

[Dirk Hohndel]

> On Sep 23, 2018, at 10:48 AM, Anton Lundin <glance at acc.umu.se> wrote:
> 
> Quite a bit OT, but continuing in that tangent, it might be time for the
> DLF thingie to grow up and become a proper libdivecomputer backend,
> instead of the subsurface specific importer we got right now. All the
> usb-file-import infrastructure got created for the Garmin downloader.

I was actually thinking that maybe a couple of our current file system
based importers could reasonable migrate into libdivecomputer now.
I haven't spent enough time to think this through in more detail, but
the more we can homogenize the experience, the better for our users.

/D