wxWidgets-3.0 warnings with Big Sur

[Ken Cunningham]

I suspect, based on Ryan’s bug investigation, that if the build scripts for wxWidgets ran install_name_tool only on the final library name (the real library), and not on any of the symlinks, that it would build correctly.

Given that we have no idea how long it will take apple to fix install_name_tool, it might be worth tweaking the wxWidgets build scripts to do that.

Ken