Improvement of my last commit

Improvement of
https://github.com/stepan-mitkin/drakon_editor/commit/100d1472f18007e758b5aa461a9c3e34e1c66b93
All language generators now have in procedure "bad_case" second
parameter "select_icon_number" . It is the number of Select icon of
Switch macroicon. The error message for bad_case edited only for
AutoHotkey code generator, other generators issue error message as they
did before. Minor update of Autohotkey code generator bad_case error
message. The examples for AutoHotkey generated with last version
generator.