Fixes and patches for GLE under UNIX by A.R.:

	-several changes in the X11 driver:
		added Shades and Grids
		backingstore support
		no path-filling while drawing fonts
		choosing widow-size
		other small things


	-fixed a few special TeX-characters
	 (german sz, danish ae...) in init.tex

        -new keyword in surface: NOBIGFILE
         prevents surface from writing bigfiles
         to the disk. An extreme speed enhancement.

	-fixed bug in arc/narc functions in gle_*
	 (all behave now like gle_ps,
         correct drawing of circles, arcs, boxes
         in a translate/rotate environment)

        -include directories

        -fixed bug in (yx)axis negate

	-trailing slash in GLE_TOP no more required
