Add UUIDs for DragonFlyBSD's partition types.
MFC r267356:
Add DragonFlyBSD's Hammer FS types and type names.
MFC r267357:
Add aliases for DragonFlyBSD's partition types.
MFC r267358:
Allow dumping to DragonFlyBSD's swap partition.
MFC r267359:
Add disklabel64 support to GEOM_PART class.
This partitioning scheme is used in DragonFlyBSD. It is similar to
BSD disklabel, but has the following improvements:
* metadata has own dedicated place and isn't accessible through partitions;
* all offsets are 64-bit;
* supports 16 partitions by default (has reserved place for more);
* has reserved place for backup label (but not yet implemented);
* has UUIDs for partitions and partition types;
MFC r267360:
Add disklabel64 support
Relnotes: yes