Log Message:
xscreensaver: update to 6.03.

6.03	* New hack, `squirtorus'.
	* New hack, `mapscroller' (X11 and macOS only).
	* `sphereeversion' now has corrugation-mode, and can evert the Earth.
	* `glplanet' is higher resolution, and displays time zones.
	* `glslideshow' displays relative pathnames again.
	* iOS: Apple broke drag-to-rotate again. Fixed.
	* macOS: fixed spurious error message in auto-update installer.
	* X11: fixed `sonar' failing to ping on some Linux systems.
	* X11: Touch-screens work.
	* X11: Hold down Backspace to clear the whole password field.