[Bug 33494] gthumb doesn't re-scan thumbnails when permissions change

[Geoff Jacobsen]

Public bug reported:
https://launchpad.net/malone/bugs/33494

Affects: gthumb (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
If one has previewed a directory where they do not have read permission
to the photos and then the permission is changed so they do have read
permission then gthumb does not update - and provides no manual way of
updating - the photo thumbnails.