libfdisk: add asktype "string" and support UUID partition change

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: add asktype "string" and support UUID partition change

Signed-off-by: Karel Zak <kzak@redhat.com>
libfdisk: (gpt) cleanup structs members names

Signed-off-by: Karel Zak <kzak@redhat.com>
libfdisk: (gpt) print UUID and NAME in expert mode only

Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: always allow 'p'rint command in expert menu

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