rrepair, merkle: resolve items from empty leaf nodes directly on both nodes
rrepair, merkle: resolve items from empty leaf nodes directly on both nodes

-> this reduces the number of approximate trivial processes in phase 2 and
   thus saves roughly 1-3% of phase 2 costs

jvf/scalaris,scalaris-team/scalaris,jvf/scalaris,scalaris-team/scalaris,jvf/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,jvf/scalaris,scalaris-team/scalaris,jvf/scalaris,jvf/scalaris,scalaris-team/scalaris,jvf/scalaris,scalaris-team/scalaris