Changed ms.env vars for recovery and TLOG; decreased log levels

Removed ms.env setting of TM_ENABLE_RECOV_CLIENT, which will now
     overload and use TM_ENABLE_TLOG_WRITES since we cannot have
     recovery without TLOG writes.
Added ms.env setting of TM_TLOG_HASH_KEYS with default value of 0
     to control whether the keys in TLOG are hashed or not.
Changed many log level calls from info to debug so that the logging
     is less voluminous.
Changed the split policy to never split is hashed keys are not used.

Change-Id: If5c8bbd4897d9d730bfdf366bbc6c6b056b481b4
Merge "Changed ms.env vars for recovery and TLOG; decreased log levels"