[css2] Added two pass for xrefs, and page number formatting

--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%40267

Author: ianbjacobs

css2/html2psrc

@@ -5,7 +5,11 @@
      duplex: 1;                 /* double sided */
      number: 1;                 /* have page numbers */
      original: 1;               /* use original PostScript images */ 
-    }
+    }   
+    xref {
+     text: [p.$N];              /* avoid line breaks before page no. */
+     passes: 2;
+     } 
     header {
         alternate: 1;
         center: $T;