Shell wrappers for the checkpoint interface

This patch provides necessary wrappers to use the checkpoint
API in shell tests.

Big thanks to Cyril and Jan for their comments to the RFC versions.

Signed-off-by: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
Acked-by: Cyril Hrubis <chrubis@suse.cz>
5 files changed