properly query IORegistry
remove fde_status implementation from block_devices
scaffolding for disk_encryption table
add disk_encryption table schema
implement disk_enryption table for OS X
clang-format the source
add newline at the end of disk_encryption.table
add device prefix to the bsd_name
provide link to apple's open source
renamed fde_status to disk_encryption, more readable code
preserve alphabetical ordering
tiny formatting fix
change header comment back to original
