/*
 * Are we using the buggy imlib_image_draw_pixel() work-around?
 *
 * Versions of Imlib2 up to and including 1.0.5 had a broken
 * imlib_image_draw_pixel() call. Imlib2-Ruby has a work-around, which
 * simulates drawing a pixel with a 1x1 rectangle.  This method allows 
 * you to check whether the work-around behavior is enabled.
 *
 * Examples:
 *   puts 'work-around is enabled' if Imlib2::Image::draw_pixel_workaround?
 *   puts 'work-around is enabled' if Imlib2::Image::bypass_draw_pixel?
 *
 */
VALUE image_dp_workaround(VALUE klass) {