Changes to be committed:

	modified:   src/misc/radio/difmap_restore.sl
		Adding qualifier for uvtaper
	modified:   src/misc/radio/make_spix.sl
		Adding qualifier for beam parameters as well as map size and pixel size for each axis.
		Adding a qualifier crpix_shift where the shift is converted from mas to pixel. By default, the
		crpix_shift is set to 0. as a relative shift is determined. It was previously set to 0.5, which
		caused the shift of the high-frequency image by 1 pixel even though a shift of (0,0) mas was
		explicitly given.