do not copy in const foreach loops

alib2algo/src/automaton/simplify/Rename.cpp

alib2algo/src/grammar/generate/CockeYoungerKasami.cpp

alib2algo/src/grammar/parsing/AbsorbTerminalSymbol.cpp

alib2algo/src/grammar/parsing/CornerSubstitution.cpp

alib2algo/src/grammar/parsing/DeterministicLL1Grammar.cpp

alib2algo/src/grammar/parsing/DeterministicLL1ParseTable.cpp

alib2algo/src/grammar/parsing/ExtractRightContext.cpp

alib2algo/src/grammar/parsing/First.cpp

alib2algo/src/grammar/parsing/Follow.cpp

alib2algo/src/grammar/parsing/HandleFirstFollowConflict.cpp

alib2algo/src/grammar/parsing/LL1ParseTable.cpp

alib2algo/src/grammar/parsing/LeftFactorize.cpp

alib2common/src/XmlApi.hpp

alib2common/src/cast/CastApi.hpp

alib2data/src/automaton/PDA/DPDA.cpp

alib2data/src/automaton/PDA/InputDrivenDPDA.cpp

alib2data/src/automaton/PDA/InputDrivenNPDA.cpp

alib2data/src/automaton/PDA/NPDA.cpp

...ata/src/automaton/PDA/RealTimeHeightDeterministicDPDA.cpp

...ata/src/automaton/PDA/RealTimeHeightDeterministicNPDA.cpp