When installing into an offline root, calling sync() is pointless and just 
hurts performance.  Don't let's do that.

Signed-off-by: Phil Blundell <philb@gnu.org>
Upstream-Status: Pending

--- a/libopkg/opkg_cmd.c	2011-09-08 10:53:07.000000000 +0100
+++ b/libopkg/opkg_cmd.c	2011-10-04 10:45:22.278615584 +0100
@@ -64,7 +64,8 @@ write_status_files_if_changed(void)
 	  opkg_msg(INFO, "Writing status file.\n");
 	  opkg_conf_write_status_files();
 	  pkg_write_changed_filelists();
-	  sync();
+	  if (!conf->offline_root)
+	      sync();
      } else {
 	  opkg_msg(DEBUG, "Nothing to be done.\n");
      }