Remove LinkerTable and LinkerTool, augment LinkedTo, LinkedFrom
unify MC linking to use LinkedTo and LinkedFrom (on top of LinksByKey), and remove redundant LinkerTable, LinkerTool
must be applied in conjunctions with Lbcom!653 (merged), Rec!3329 (merged), MooreAnalysis!113 (merged), Alignment!354 (merged)
Edited by Gerhard Raven