redesign xml to tokens api

aintrospection2/src/aintrospection.cpp

alib2data/test-src/alphabet/SymbolTest.cpp

alib2data/test-src/automaton/AutomatonTemplatesTest.cpp

alib2data/test-src/automaton/AutomatonTest.cpp

alib2data/test-src/common/SparseBoolVectorTest.cpp

alib2data/test-src/grammar/GrammarTest.cpp

alib2data/test-src/label/LabelTest.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

alib2raw/src/tree/raw/UnrankedTree.h

alib2xml/src/abstraction/XmlTokensComposerAbstraction.hpp

alib2xml/src/abstraction/XmlTokensParserAbstraction.hpp

alib2xml/src/factory/XmlDataFactory.hpp

alib2xml/src/registry/XmlRegistry.cpp

alib2xml/src/sax/SaxComposeInterface.cpp

alib2xml/src/sax/SaxComposeInterface.h

alib2xml/src/sax/SaxParseInterface.cpp