Corrected checking for glut library.

--- configure.ac	2003-12-02 05:11:09.000000000 +0100
+++ configure.ac	2003-12-02 17:01:01.000000000 +0100
@@ -343,9 +343,9 @@
 
              dnl Check for glut32 library.
              AC_CHECK_LIB(glut,glutMainLoop,
-                       [AC_SUBST(GLUT_LIBS,"-lglut")
+                       [AC_SUBST(GLUT_LIBS,"-lglut -lXmu -lXi")
                         AC_SUBST(GLUT32FILES,'$(GLUT32FILES)')],,
-                        $OPENGL_LIBS $X_LIBS $X_PRE_LIBS -lX11 $X_EXTRA_LIBS)
+                        $OPENGL_LIBS $X_LIBS $X_PRE_LIBS -lXmu -lXi -lX11 $X_EXTRA_LIBS)
 	 fi
     fi