libblkid: move SGI disklabel definitions to include/

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (sgi) share disk label definition with libblkid

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (sgi) use cpu_to_beXX() and beXX_to_cpu()

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (sgi) remove magic strings

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (sgi) cleanu sgi_info stuff

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (sgi) cleanup disk label struct usage

Signed-off-by: Karel Zak <kzak@redhat.com>
libfdisk: (sun) remove duplicate code

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (sgi) remove unnecessary code

Signed-off-by: Karel Zak <kzak@redhat.com>