- this patch fixes ID reconstruction but doesn't get the column names quite
  right.  they're close to being correct, and there is a bug in glue that
  makes it inconvenient to get them any closer, so we'll give this a try
  and see if downstream consumer codes care.  note that ligolw_no_ilwdchar
  does *not* care:  with this patch, file --> ilwdify -->
  ligolw_no_ilwdchar --> file is now an identity transformation.  also note
  that glue's normal document parsing logic does not care:  ligolw_print
  is happy with the result of this transformation.  it's not impossible,
  however, that somebody has written some custom code that adds additional
  safety checks and will notice the column names.