Fix udisks-lvm.service.

Signed-off-by: Stef Walter <stefw@redhat.com>
Invocation: info->in_args can be NULL.

Signed-off-by: Stef Walter <stefw@redhat.com>
Invocation: PolkitDetails can be NULL.

Signed-off-by: Stef Walter <stefw@redhat.com>
VolumeGroup: Correctly round sizes.

Signed-off-by: Stef Walter <stefw@redhat.com>
Correct UDisks types in docs.

Signed-off-by: Stef Walter <stefw@redhat.com>
Use "types.h" header.

To avoid cyclic dependencies between header files.

Signed-off-by: Stef Walter <stefw@redhat.com>