unbounded regexps use new tree representation

alib2algo/src/regexp/simplify/RegExpOptimize.cpp

alib2algo/src/regexp/simplify/RegExpOptimizeFormalPart.cxx

...2algo/src/regexp/simplify/RegExpOptimizeUnboundedPart.cxx

alib2data/src/regexp/unbounded/UnboundedRegExp.cpp

alib2data/src/regexp/unbounded/UnboundedRegExp.h

...2data/src/regexp/unbounded/UnboundedRegExpAlternation.cpp

alib2data/src/regexp/unbounded/UnboundedRegExpAlternation.h

...ata/src/regexp/unbounded/UnboundedRegExpConcatenation.cpp

...2data/src/regexp/unbounded/UnboundedRegExpConcatenation.h

alib2data/src/regexp/unbounded/UnboundedRegExpElement.cpp

alib2data/src/regexp/unbounded/UnboundedRegExpElement.h

alib2data/src/regexp/unbounded/UnboundedRegExpEmpty.cpp

alib2data/src/regexp/unbounded/UnboundedRegExpEmpty.h

alib2data/src/regexp/unbounded/UnboundedRegExpEpsilon.cpp

alib2data/src/regexp/unbounded/UnboundedRegExpEpsilon.h

alib2data/src/regexp/unbounded/UnboundedRegExpIteration.cpp

alib2data/src/regexp/unbounded/UnboundedRegExpIteration.h

alib2data/src/regexp/unbounded/UnboundedRegExpSymbol.cpp

alib2data/src/regexp/unbounded/UnboundedRegExpSymbol.h