gEDA: Another patch in PCB

[Russ Dill <Russ_dot_Dill-at-NOSPAMasu_dot_edu>]

I noticed PCB doesn't print tool information into the paste mask. This
is because polarity is never set in the print.c file. This patch fixes
that (your board house will charge you extra if they can't read your
mask file, and they have to make it from scratch)

--- pcb-1.7.3/src/print.c	Thu Aug  3 11:15:22 2000
+++ pcb-1.7.3.new/src/print.c	Mon Dec 31 13:18:33 2001
@@ -478,6 +478,9 @@
 			description[i]))
 			return(1);
 
+		/* Solder paste masks are positive */
+		Device->Polarity(0);
+
 		/* print element outlines and canonical, instance or
 		 * value descriptions
 		 */