[Carpet] weight is initialised differently with use_grid_structure_from_checkpoint feature turned on

[I.Hawke at soton.ac.uk]

Quoting Thomas Radke <tradke at aei.mpg.de>:

> Erik Schnetter wrote:
> > My patch changed things to that, after recovery, the postregrid bin  is
> > run for all time levels.  This should initialise the weight (and  all
> > other such grid functions with time levels) correctly.  I checked  with
> > Bruno's parameter file, and it works now correctly for me.
> >
> > I asked Bruno to check whether this solves his problem.  Is there is  a
> > problem left over which I did not catch?
>
> Me and Bruno still get different values in the norms output, even with
> your patch "Carpet: Correct regridding error during recovery":

For me Bruno's last parameter file gives identical results before and after
checkpointing. This remains true if WaveToyMoL etc. is replaced with
WaveToyC or similar. ???

Ian