gui source organization redesign, related fixes

.gitlab-ci.yml

CMake/CMakeLists_executable.txt

CMake/CMakeLists_gui.txt

CMake/CMakeLists_library.txt

CMake/CMakeLists_root.txt

CMake/alib_cmake.py

agui2/makefile.conf

...tal/test-src/grammar/parsing/AbsorbTerminalSymbolTest.cpp

...ental/test-src/grammar/parsing/AbsorbTerminalSymbolTest.h

...ental/test-src/grammar/parsing/CornerSubstitutionTest.cpp

...imental/test-src/grammar/parsing/CornerSubstitutionTest.h

...ntal/test-src/grammar/parsing/ExtractRightContextTest.cpp

...mental/test-src/grammar/parsing/ExtractRightContextTest.h

...test-src/grammar/parsing/HandleFirstFirstConflictTest.cpp

...l/test-src/grammar/parsing/HandleFirstFirstConflictTest.h

...est-src/grammar/parsing/HandleFirstFollowConflictTest.cpp

.../test-src/grammar/parsing/HandleFirstFollowConflictTest.h

...perimental/test-src/grammar/parsing/LL1ParseTableTest.cpp

...experimental/test-src/grammar/parsing/LL1ParseTableTest.h

...o_experimental/test-src/grammar/parsing/LR0ParserTest.cpp