Add forgotten file

Dependencies

• [2] D5QIOJGP * Move everything up one directory.

Change contents

• file addition: upgrade-33.sql (----------)
  [2.3004]
  + create table FailedPaths (

  + path text primary key not null

  + );

  +

  + create rule IdempotentInsert as on insert to FailedPaths

  + where exists (select 1 from FailedPaths where path = new.path)

  + do instead nothing;