platform: do not pass a directory on the command line.
The home directory will be properly set by Device.home_dir.
It was sometimes crashing when opened with no args.
Fixes: #7049
Update shellcheck and shfmt to the latest version.
Fixes <https://github.com/koreader/koreader/issues/5152>.
Btw, you can apply shellcheck suggestions with a command like:
```
shellcheck --include=SC2250 -f diff *.sh | git apply
```
* Prefer our own FBInk binary
* Get rid of the CRe config tweaks
* Oops, actually ship libkohelper in the KUAL extension.
* Bump extension version
* Flush to disk before printing final status message
It's generally broken, and useless there.
The main intended use-case is the DX/DXg, because of its larger screen &
low RAM leading to more severe memory constraints.
* Refresh Kindle model ID routines
* Pickup current OTA packages
We stopped shipping files w/ the full .tar.gz extension a looooong time
ago.
* And actually generally handle current packages properly
* Kindle screensaver handling experiment
WIP, because there's a fair bit of insanity left in there.
Namely, USBMS is anathema. We simply shouldn't do that, at all,
but the system allows us to do it and basically shoot ourselves in the
head one way or another.
* Don't try to handle the insanity that would be USBMS on Kindles
* Yay, one less thing to worry about :).
* Okay, that should be much saner...
Since the whole deal w/ letting the WM handle stuff was for SO, restrict
that to SO devices.
The other concern was USBMS, but we can't support it.
* Reword that
* And move that comment inside the branch, like its counterpart
