Build problem with lXext for solaris 2

[jacobi at parc.xerox.com]

On sparc with solaris2.5, Kaffe builds 
..../kaffe-snap/libraries/clib/awt/X/Makefile using twice
	-lXext -L/usr/openwin/lib -R/usr/openwin/lib
instead of
	-L/usr/openwin/lib -R/usr/openwin/lib -lXext
	
Chris