Add group switch key to Ethiopic keyboard

diff -u -p -u -p -r1.4 et
--- symbols/et	21 Nov 2007 23:02:37 -0000	1.4
+++ symbols/et	24 Jan 2008 10:20:26 -0000
@@ -69,7 +69,7 @@ xkb_symbols "olpc" {
     key <AB09>	{ [        0x01001364,  VoidSymbol ]	}; // >
     key <AB10>  { [        VoidSymbol,  question   ]    }; // ?
 
+    key <BKSL>  { [        backslash,   VoidSymbol ]    }; // bksl
 
-    key <BKSL> {  [        backslash,   VoidSymbol ]    }; // bksl
-
+    key <I219>  { [ ISO_Next_Group, ISO_Prev_Group ]    };
 };