Imagick::resizeImage has nasty BC break.

[Danack]

The signature on IM6 - Imagick::resizeImage(int width, int height, int filter, float blur[, bool bestfit = false[, bool legacy]]

The signature on IM7 should be Imagick::resizeImage(int width, int height, int filter [, bool bestfit = false[, bool legacy]]

as blur has gone away....