[PATCH] Load existing thumbnails regardless the original file size.

[Cosimo Cecchi <anarki lilik it>]

Hi,

I made a patch for bug #501268 [1], which requests that if there's an
existing thumbnail for a file, that should be loaded regardless of the
current size limit and the size of the original file.
This makes sense to me, as if we already have a thumbnail (because we
made it in another way outside Nautilus or we set a higher limit in the
past and then lowered it), showing it won't be much more expensive than
showing the stock icon. While I was at it I also fixed a TODO in the
thumbnail code.

[1] http://bugzilla.gnome.org/show_bug.cgi?id=501268

Cheers,

Cosimo