The output format of `dkms status` has changed in v2.8.6
old - zfs, 2.1.4, 5.15.39_1, x86_64: installed
new - zfs/2.1.4, 5.15.39_1, x86_64: installed
So, I've re-worked the _modver and _kver detection logic.
NOTE: The detection logic should ideally be identical to the detection
logic in srcpkgs/dkms/files/kernel.d/dkms.prerm
Also, there was a bug. If a package tried to install a dkms module that
failed to build for *all* of the installed kernels, then the output of
dkms status for that module would be -
old - module-name, x.y.z: added
new - module-name/x.y.z: added
Which would cause the dkms trigger to set _kver to "added", and then the
following call to `dkms remove` would set the flag `-k $_kver`, and dkms
would get confused trying to find a kernel of version "added".
This commit fixes that bug.
131d123f63