…3269)

Using `activation_uri` can be problematic with links.

The real path for gvfs mounts is /run/user/nnnn/gvfs/*, so remove
the /run path from the skip list - in hindsight there may be more
users here than assumed (see Warpinator link).

The zero-size file check was originally intended to catch /proc
files without having to check each folder's filesystem type, but
since we're skipping /proc explicitly, it's not necessary, and
smb folders (and probably others) report 0 size.

Fixes #3273

linuxmint/warpinator@1c502dcd0e590953f7

This reflects a change in nemo-thumbnails.c,
which now uses GNOME_DESKTOP_THUMBNAIL_SIZE_LARGE
instead of GNOME_DESKTOP_THUMBNAIL_SIZE_NORMAL,
and so thumbnails are now 256px, not 128px.

Fixes #3268

be resolved.

The dnd proxy info won't be destroyed (including an extra ref on
the target slot) until the slot is destroyed (via set_data_full),
but the slot will linger and leak because of the extra ref.

This fixes a regression by 1c526f6 that causes thumbnails for local files to not be created because the thumbnailer didn't get an uri.