Strip away copyrighted ICC profile

While searching for embedded non-free ICC profile:

	find . -regextype posix-extended -iregex '.*\.(jpg|png)' \
		-exec sh -c 'identify -verbose "$0" \
		| grep -i copyright && echo "$0"' {} \;

`skin/classic/tabbar/tab-bkgnd.png` showed up. The proposed file just removes the embedded non-free ICC profile:

	exiftool -icc_profile"-<=" skin/classic/tabbar/tab-bkgnd.png