Convert local scheduler messages to flatbuffers (#340)

* use flatbuffer messages for local scheduler

* make sure constructor gets called for C++ object ObjectInfoT

* fix typo

* fix Robert's comments

* Small change to actor test.

* fix valgrind error

* linting

* free notification

* fix

* valgrind

* fix valgrind

* fix other bugs

* valgrind fix

* fixes

* more fixes

* Small changes to comments.

src/common/state/object_table.cc

@@ -1,6 +1,5 @@
 #include "object_table.h"
 #include "redis.h"
-#include "object_info.h"
 
 void object_table_lookup(DBHandle *db_handle,
                          ObjectID object_id,

src/common/state/redis.cc

@@ -19,7 +19,6 @@ extern "C" {
 #include "actor_notification_table.h"
 #include "local_scheduler_table.h"
 #include "object_table.h"
-#include "object_info.h"
 #include "task.h"
 #include "task_table.h"
 #include "error_table.h"