Sync with svn.7he.at/vps/trunk r198.

r198 | klaus | 2013-07-30 03:17:00 -0600 (Tue, 30 Jul 2013) | 4 lines
Added check in deadlkres() for dead vps instances;
and added locking in vps_deref() where the destroy task is initialized.

Submitted by: Klaus P. Ohrhallinger <k@7he.at>