* Fix wildcard display in the file selector dialog (on GTK
it would show the regex to the user)
* Move the file extension comparison into a common function
(cherry picked from commit b33c3a5ad8)
The returns of KiCad file extensions on GTK contain basic regex matching
case-insensitive file extensions. We need to match these in the
provider and tests
(cherry picked from commit 1956c074ba)
jean-pierre charras
Ian McInerney
Seth Hillbrand
John Beard