67481bd295
Each thread has a thread-local record_pair_stack. The stack is dynamically allocated on first use, but is not detroyed when the thread exits. Replaced record_pair_stack pointers with record_pair_stack instances, the intances are constructed on first odr-use, and destructed when the thread exits. Also, converted the cb_journal and act_journal to instances. Change-Id: I186ac29da477f194880a1ab599f4be5715a23063