Added synchronization base code. Four new APIs are required for a service
to support synchronization. sync_init, sync_process, sync_activate, and
sync_abort provide the calls into the recovery mechanism.

sync.h, sync.c:
new file
totemsrp.h, totemsrp.c, print.h, print.c, Makefile, main.c, handlers.h:
Synchronization base code added.
ipc_gen.h:
Synchronization base code.

BKrev: 422639e5L_FEDTWgRgI-w8vKm8zhMQ


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@510 fd59a12c-fef9-0310-b244-a6a79926bd2f