unify some dispatch algorithms

aaccess2/src/AutomatonAccess.h

aaccess2/src/GrammarAccess.h

aaccess2/src/RegExpAccess.h

aaccess2/src/StringAccess.h

aaccess2/src/TreeAccess.h

...o/src/arbology/exact/ExactNonlinearTreePatternAutomaton.h

alib2algo/src/arbology/exact/ExactTreePatternAutomaton.h

alib2algo/src/arbology/transform/BeginToEndIndex.h

alib2algo/src/automaton/properties/EpsilonClosure.h

alib2algo/src/automaton/run/Result.h

alib2algo/src/grammar/generate/CockeYoungerKasami.h

alib2algo/src/grammar/generate/GenerateUpToLength.h

alib2algo/src/grammar/parsing/First.h

alib2algo/src/grammar/parsing/Follow.h

alib2algo/src/grammar/properties/NonterminalUnitRuleCycle.h

alib2algo/src/grammar/properties/RecursiveNonterminal.h

alib2algo/src/graph/maximumflow/FordFulkerson.h

alib2algo/src/graph/minimumcut/FordFulkerson.h

alib2algo/src/graph/shortestpath/BellmanFord.h

alib2algo/src/graph/shortestpath/Dijkstra.h