Subject: bug#17519: [PATCH] take into account QuantumScale when reading imagemagick images

From: Nicolas Léveillé <[email-masked]>
Date: Sat, 17 May 2014 15:25:56 +0200

Symptom:
On Macs with a freshly compiled "nexstep" emacs and no rsvg library, the splash screen displays a corrupted picture.

This patch is here corrects the "pixel pushing" (default) method for loading images from ImageMagick to properly interpret pixels from images loaded with ImageMagick compiled with any pixel quantum value. (Q32 for instance)

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