Allow copying of res.group.

With this patch, access groups can be duplicated. Solves the
'unique(name)' constraint for the new instance.

bzr revid: p_christ@hol.gr-20090421161937-odqnx1ycmwvp04mp

bin/addons/base/res/res_user.py

@@ -67,6 +67,14 @@ class groups(osv.osv):
 
         return gid
 
+    def copy(self, cr, uid, id, default={}, context={}, done_list=[], local=False):
+	group = self.browse(cr, uid, id, context=context)
+        default = default.copy()
+	if not 'name' in default:
+		default['name'] = group['name']
+        default['name'] = default['name'] + _(' (copy)')
+        return super(groups, self).copy(cr, uid, id, default, context=context)
+
 groups()