1. Don't throw unspecified entries too early. Doing so caused various
rendering glitches. And we can now also check if an entry is
selected but it's parent not.
2. "menu"s in Kconfig can also have dependencies...
Some pre-existing .toml data files are found problematic after the
change, fix them and regenerate all rendered -kernel.xml files.
I don't know these FS very well so I did not change things, except:
- "SCSI_LOW_LEVEL" should be "SCSI_LOWLEVEL" (without the "_" between
"LOW" and "LEVEL").
- RAID append mode is deprecated, so I removed it.
And I've fixed some issues in kernel-config.py as well.
clarify the rationale of the package and kernel support.
Note that we actually do not need this package if we only need to mount
FAT fs, not create or check or relabel it.
