CaloClusterMatchLinkAlg + CaloClusterMatchingTool: Make tool private and migrate to WriteDecorHandle(Key)
CaloClusterMatchLinkAlg + CaloClusterMatchingTool: Make tool private and migrate to WriteDecorHandle(Key) to get data-dependencies right. Should hopefully fix a crash I encounter when running with multiple threads.
Plus: General cleanup, eliminate constructors
Edited by Walter Lampl