speedup generate strings up to given length from grammar

alib2algo/src/grammar/generate/GenerateUpToLength.cpp

alib2algo/src/grammar/generate/GenerateUpToLength.h

...o/test-src/grammar/generate/GrammarGenerateUpToLength.cpp

alib2common/src/PrimitiveRegistrator.cpp

alib2data/src/PrimitiveRegistrator.cpp

alib2std/src/extensions/container/forward_tree.hpp

alib2std/src/extensions/container/tree.hpp

alib2std/src/extensions/container/trie.hpp

tests.anormalize.sh