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to build with Qt5.

And some depended files in other directories.

Now everybody can unset Kumir error state, not only VM::Variable.
Also added non-inline non-virtual protected destructors to AbstractInputBuffer and AbstractOutputBuffer.

Because on Windows32 that name is changed to DrawTextA in kuznec.cpp
but not in kuznec.h
Have to clear away Windows.h from all headers!

to the ide, teacher and macx versions.

Added some debug, fixed some messages.
Enchanced options parsing.