main.c, handlers.h, evt.c, evs.c, clm.c, ckpt.c, amf.c:
exec_dump_fn support as SIGUSR2 handler to easy to debug

BKrev: 416a3b42053878SDRpbH_G7EUB4rAQ


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@328 fd59a12c-fef9-0310-b244-a6a79926bd2f