Client library: implement kfs client state machine instrumentation to enforce and track down invalid invocations from threads different, than the thread set by the  SetThread() method.
Chunk server: track down and fix invalid RS recovery state machine's meta server protocol state machine access from the main thread. Implement instrumentation to track down invalid meta server state machine access from thread different than the recovery state machine's thread.
Test scripts: enable chunk server RS recovery state machine thread access check instrumentation.