additional value for image-rendering

Hi,

I would like to propose an additional value for
http://www.w3.org/TR/SVG11/painting.html#ImageRenderingProperty

disableResampling - The user agent shall use nearest neighbor resampling
only.

Perhaps this isn't the best name for it - disableSmoothing or
disableFiltering anyone. There is a demand e.g. in
https://bugzilla.mozilla.org/show_bug.cgi?id=423756 to turn off bilinear
filtering and optimizeSpeed isn't guaranteed to do that.

Mozilla will introduce something with -moz- for the release of firefox after
3.5 unless an official value appears. The current firefox trunk has
-moz-disable-resampling for SVG images only, although image-rendering will
likely be made to work on html img elements too.

Best regards

Robert.