[FIX] Base : Country can be searched on Country codes independent to case

lp bug: https://launchpad.net/bugs/519204 fixed

bzr revid: jvo@tinyerp.com-20100209094238-9sxar7uuz1g1ux0g

bin/addons/base/res/country.py

@@ -48,7 +48,7 @@ class Country(osv.osv):
             context={}
         ids = False
         if len(name) == 2:
-            ids = self.search(cr, user, [('code', '=', name)] + args,
+            ids = self.search(cr, user, [('code', 'ilike', name)] + args,
                     limit=limit, context=context)
         if not ids:
             ids = self.search(cr, user, [('name', operator, name)] + args,