Eng 7099 disable dr on primary

After the paths had been excercised a bit and nolock/double lock checks seemed unneeded, I was going to comment out  (so they are easily reintroduced) the declarations for:
m_mutexLockedCnt
m_mutexLocked
m_mutexLine0
m_mutexLine1
I could used a debugging guard, but the only guard I am familiar with is the log guard, which is passed in to the c'tor. I don't know if that is appropriate. That being said, I should definitly add some more trace and debug logging that actually uses the passed in log when state, membership, task, lock changes occur. I will revisit the logging after the review. Thanks.