Shm: Fix number of region events, which has been incremented more often than it should, leading to unnecessary shm contention by the event thread.
Shm: Recent patches removed shm lock from parts of Region handling (fair::mq::shmem::Manager::fRegion). However some of it still needs process-local thread-safety. Add it for the relevant parts.
fair::mq::shmem::Manager::fRegion). However some of it still needs process-local thread-safety. Add it for the relevant parts.