1.8.4
- fix build on CentOS 7.
- drop custom annotation to set the time namespace and use the OCI specs instead.
- cgroup: workaround cpu quota/period issue with v1. Sometimes setting CPU quota period fails when a new period is lower, and a parent cgroup has CPU quota limit set.
- cgroup: fix set quota to -1 on cgroup v1.
- criu: drop loading unused functions.