update runc to v1.0.0-rc93

full diff: https://github.com/opencontainers/runc/compare/v1.0.0-rc92...v1.0.0-rc93

also removes dependency on libcontainer/configs

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/opencontainers/runc/libcontainer/devices/device_unix.go

@@ -0,0 +1,16 @@
+// +build !windows
+
+package devices
+
+import (
+	"errors"
+
+	"golang.org/x/sys/unix"
+)
+
+func (d *Rule) Mkdev() (uint64, error) {
+	if d.Major == Wildcard || d.Minor == Wildcard {
+		return 0, errors.New("cannot mkdev() device with wildcards")
+	}
+	return unix.Mkdev(uint32(d.Major), uint32(d.Minor)), nil
+}