data: rename EndSymbol -> End

...algo/src/automaton/convert/ToPostfixPushdownAutomaton.cpp

alib2algo/src/automaton/convert/ToPostfixPushdownAutomaton.h

alib2algo/src/rte/convert/ToPostfixPushdownAutomaton.cpp

alib2algo/src/rte/convert/ToPostfixPushdownAutomaton.h

...go/src/rte/convert/ToPostfixPushdownAutomatonGlushkov.cpp

...algo/src/rte/convert/ToPostfixPushdownAutomatonGlushkov.h

...c/rte/convert/ToPostfixPushdownAutomatonGlushkovNaive.cpp

...src/rte/convert/ToPostfixPushdownAutomatonGlushkovNaive.h

alib2algo/src/stringology/exact/GalilSeiferas.h

alib2algo/src/tree/transform/FirstChildNextSibling.h

alib2algo/test-src/automaton/convert/FTAtoPDATest.cpp

alib2algo_experimental/src/grammar/parsing/LRParser.cpp

...gy/indexing/ExperimentalCompactSuffixAutomatonConstruct.h

alib2data/src/alphabet/End.cpp

alib2data/src/alphabet/End.h

alib2data/src/alphabet/xml/End.cpp

alib2data/src/alphabet/xml/End.h

alib2str/src/alphabet/string/End.cpp

alib2str/src/alphabet/string/End.h

...r/src/string/string/common/StringFromStringParserCommon.h