[Carpet] recovering grid structure from checkpoint

[Thomas Radke]

Hi,

I fixed two of the three CarpetIOHDF5 testsuites which test 
checkpointing/recovery. I found that the third one, which also recovers 
the grid structure from the checkpoint file, gives different results 
compared to the default grid structure setup procedure. While all the 1D 
output files are identical, differences occur in all norms, eg.

> diff /home/tradke/cactus/arrangements/Carpet/CarpetIOHDF5/test/CarpetWaveToyNewRecover_test_1proc/phi.norm1.asc /home/tradke/cactus/TEST/wave/CarpetIOHDF5/CarpetWaveToyNewRecover_test_1proc/phi.norm1.asc
> 
> 
> 1,3c1,3
> < 64 0.421052631578947 0.845190454122255
> < 96 0.631578947368421 0.817531253193611
> < 128 0.842105263157895 0.795234619496462
> ---
>> 64 0.421052631578947 0.845251782965402
>> 96 0.631578947368421 0.817538528282232
>> 128 0.842105263157895 0.795164735804112

Bug or feature ?

-- 
Cheers, Thomas.