While I haven't been able to reproduce the crash, my theory is that
those that do are running into situations where wxWidgets defers
destructing the window.
Fixes https://gitlab.com/kicad/code/kicad/issues/8458
1) schematic sheets which don't match a project name (ie: aren't a
root sheet)
2) legacy schematic sheets when a current-format sheet is also present
witht the same name
Fixes https://gitlab.com/kicad/code/kicad/issues/6801
The fileWatcher works on some platforms, but not on others.
Also modifies it so that it just asks for the directory name rather
than starting with the existing path (which provided unnecessary
flexibility at the expense of ease-of-understanding and ease-of-use).
If you want the directory somewhere else, select where you want it
before doing "New Directory...".
Also updates naming conventions and file order.
Fixes https://gitlab.com/kicad/code/kicad/issues/6592
Jeff Young
jean-pierre charras