libfdisk: add fdisk_context_enable_details()

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (sun) consolidate 'p'rint output

 * use label operation list()
 * use generic fdisk geometry output for sun
 * don't duplicate geometry information

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (sun) use tt.c to list disk label

Signed-off-by: Karel Zak <kzak@redhat.com>
libfdisk: add fdisk_partname()

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: (gpt, sun) use fdisk_partname()

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