use DefaultTypes in alib2data

alib2data/src/alphabet/Symbol.cpp

alib2data/src/automaton/Automaton.cpp

alib2data/src/grammar/Grammar.cpp

alib2data/src/label/Label.cpp

alib2data/src/regexp/RegExp.cpp

alib2data/src/regexp/RegExp.h

alib2data/src/rte/RTE.cpp

alib2data/src/string/String.cpp

alib2data/src/string/String.h

alib2data/src/string/common/StringAuxiliary.cpp

alib2data/src/string/common/StringAuxiliary.h

alib2data/test-src/automaton/AutomatonTest.cpp

alib2data/test-src/grammar/GrammarTest.cpp

alib2data/test-src/regexp/RegExpTest.cpp

alib2data/test-src/rte/RTETest.cpp

alib2data/test-src/string/StringTest.cpp

alib2data/test-src/tree/PatternTest.cpp

alib2data/test-src/tree/TreeTest.cpp