wxWidgets provides a system-dependent string for "*" or "*.*" depending
on the system. Unfortunately, wxFormBuilder does not use this and
instead defaults to the Windows-only "*.*". This is an ugly work
around.
Fixes: lp:1810221
* https://bugs.launchpad.net/kicad/+bug/1810221
Create a dialog to give the user options to configure the global symbol
library table the first time Eeschema is run when no global symbol library
table exists.