fix the standardization of the configuration partition spec
we now work only with LBA, and we check the spec can be applied
to the disk

Signed-off-by: Luca Fulchir <luker@fenrirproject.org>

Basic algorithm to calculate partition indexes
Note that it is wrong and still misses several checks

Signed-off-by: Luca Fulchir <luker@fenrirproject.org>

Signed-off-by: Luca Fulchir <luker@fenrirproject.org>

Signed-off-by: Luca Fulchir <luker@fenrirproject.org>

apparently 'cargo watch' has problems when a module is named 'target'
Don't bother investingating, it's easier to change the names of our
modules

At least this way 'cargo watch' works again

Signed-off-by: Luca Fulchir <luker@fenrirproject.org>