disable dss, fix path to xauth

X11 forwarding needs xauth. Package will be ported soon.
Fix the path to xauth. Disable DSS, because we only use RSA
hostkeys by default. This avoids a errormessage when starting
dropbear.

package/dropbear/patches/patch-options_h

@@ -1,6 +1,6 @@
 $Id: update-patches 24 2008-08-31 14:56:13Z wbx $
 --- dropbear-0.52.orig/options.h	2008-11-11 15:13:50.000000000 +0100
-+++ dropbear-0.52/options.h	2009-03-19 19:24:46.000000000 +0100
++++ dropbear-0.52/options.h	2010-01-22 17:55:09.000000000 +0100
 @@ -10,6 +10,11 @@
   * parts are to allow for commandline -DDROPBEAR_XXX options etc.
   ******************************************************************/
@@ -13,6 +13,15 @@ $Id: update-patches 24 2008-08-31 14:56:13Z wbx $
  #ifndef DROPBEAR_DEFPORT
  #define DROPBEAR_DEFPORT "22"
  #endif
+@@ -115,7 +120,7 @@ etc) slower (perhaps by 50%). Recommende
+  * Removing either of these won't save very much space.
+  * SSH2 RFC Draft requires dss, recommends rsa */
+ #define DROPBEAR_RSA
+-#define DROPBEAR_DSS
++/* #define DROPBEAR_DSS */
+ 
+ /* RSA can be vulnerable to timing attacks which use the time required for
+  * signing to guess the private key. Blinding avoids this attack, though makes
 @@ -129,7 +134,7 @@ etc) slower (perhaps by 50%). Recommende
  /* #define DSS_PROTOK */
  
@@ -22,3 +31,12 @@ $Id: update-patches 24 2008-08-31 14:56:13Z wbx $
  
  /* Whether to print the message of the day (MOTD). This doesn't add much code
   * size */
+@@ -220,7 +225,7 @@ etc) slower (perhaps by 50%). Recommende
+ /* The command to invoke for xauth when using X11 forwarding.
+  * "-q" for quiet */
+ #ifndef XAUTH_COMMAND
+-#define XAUTH_COMMAND "/usr/X11R6/bin/xauth -q"
++#define XAUTH_COMMAND "/usr/bin/xauth -q"
+ #endif
+ 
+ /* if you want to enable running an sftp server (such as the one included with