doc webdav: Fix putting of utf-8 names

We had a mix of unicode and utf-8 encoded strings, which broke the join
at line 700.

bzr revid: p_christ@hol.gr-20101123184905-9t7v1jrx257oog27

addons/document_webdav/dav_fs.py

@@ -681,7 +681,7 @@ class openerp_dav_handler(dav_interface):
         except Exception:
             node = False
         
-        objname = uri2[-1]
+        objname = misc.ustr(uri2[-1])
         
         ret = None
         if not node:
@@ -714,7 +714,7 @@ class openerp_dav_handler(dav_interface):
                 etag = str(newchild.get_etag(cr))
             except Exception, e:
                 self.parent.log_error("Cannot get etag for node: %s" % e)
-            ret = (hurl, etag)
+            ret = (str(hurl), etag)
         else:
             self._try_function(node.set_data, (cr, data), "save %s" % objname, cr=cr)