ipc_ckpt.h, testckpt.c, ckptbench.c, util.c, ckpt.c:
defect 595
There are various bugs with saCkptCheckpointOpenAsync that result in it
crashing the executive, library, or just failing the saftest conformance
suite.

BKrev: 42a4afd8Fg5CFXDzyZ_v5qo_ad-Guw


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@652 fd59a12c-fef9-0310-b244-a6a79926bd2f