create the concretizer for combined revisions
add data managers for combined revisions
change the type of revisions from RevisionInfo to CombinedRevisoinInfo on CloneGenealogyInfo
change the type of revisions from RevisionInfo to CombinedRevisoinInfo on CloneSetInfo
[refactoring] rename getters of revisions in CloneGenealogyInfo
change the type of revisions from RevisionInfo to CombinedRevisoinInfo on CloneSetLinkInfo
change the type of revisions from RevisionInfo to CombinedRevisoinInfo on CodeFragmentGenealogyInfo
change the type of revisions from RevisionInfo to CombinedRevisoinInfo on CodeFragmentInfo
change the type of revisions from RevisionInfo to CombinedRevisoinInfo on CodeFragmentLinkInfo
change the type of revisions from RevisionInfo to CombinedRevisoinInfo on classes of blocks