protobuf: Add @blk_sigset to thread_core_entry

It will hold the blocked signals for threads.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

protobuf/core.proto

@@ -72,6 +72,7 @@ message thread_core_entry {
 	optional sint32			sched_nice	= 3;
 	optional uint32			sched_policy	= 4;
 	optional uint32			sched_prio	= 5;
+	optional uint64			blk_sigset	= 6;
 }
 
 message core_entry {