changes to logging. Calculate replication url correctly. null check for writebatch.
changes to logging. Calculate replication url correctly. null check for writebatch.

nla/outbackcdx,nla/tinycdxserver,nla/outbackcdx,nla/outbackcdx,nla/tinycdxserver,nla/tinycdxserver,nla/outbackcdx,nla/tinycdxserver