OpenImageIO/oiio — pull request #443 by lgritz (2012-10-28 23:55:33+00:00)
Title: ImageCache: More graceful handling of inability to free handles or tiles

ImageCache: More graceful handling of inability to free handles or tiles.
Rather than assert when we seem unable to free handles or tiles fast enough
to stay within the limits, just allow the limits to be exceeded (hopefully
only by a little, and only temporarily).