cherry-picked commit 8f54307
Fixed naming and code comments
Added tlog info to STATUS action
Added CdcrParams for tlog status
Added fix for handling negative version numbers
Switched back commented code
Changed logPointers map to ConcurrentHashMap
cherry-picked commit d73177a
cherry-picked commit 8b84eeb
cherry-picked commit 81b4a12
cherry-picked commit 5d0e28a
cherry-picked commit 642703b
cherry-picked commit f0a8843