Message 293373 - Python tracker

The step after installing newer Tk will require `make clean` and `make` again to let linker link to the recent install version.

I can freeze the cursor after double click on any version of Tk I install, 8.5.9 / 8.5.18 / 8.6.4 on MacOS Sierra.

Maybe we should separate this problem, let this issue focus on fixing misbehavior of listbox, and create another for MacOS freeze issue?