genbt5list: prevent conflicts when several process calls genbt5list in parallel

product/ERP5/bin/genbt5list

@@ -215,7 +215,8 @@ def main(dir_list=None, **kw):
 
   for d in dir_list:
     bt5list = generateInformation(d, **kw).getvalue()
-    d = os.path.join(d, 'bt5list.new')
+    # add pid in filename to avoid conflicts if several process calls genbt5list
+    d = os.path.join(d, 'bt5list.new.%i' % os.getpid())
     try:
       with open(d, 'wb') as f:
         f.write(bt5list)