Medium: CIB: Implement a client-side operation timeout - Requires LHA update
Timeouts of synchronous calls requires the new msgfromIPC_timeout() call
from Heartbeat.
A configure check for this function has been added and msgfromIPC() is used
if it is not present.

Mercurial revision: 561838e41009732c7aa4635fe6ed1abdf6123395