[Carpet] Recovering the grid structure

[Erik Schnetter]

I have just pushed a set of patches that make it possible to recover  
the grid structure from checkpoint files.  This requires setting two  
new parameters

	Carpet::regrid_during_recovery = no
	CarpetIOHDF5::use_grid_structure_from_checkpoint = yes

These settings may become the default in the future.  The existing  
methods for deciding the grid structure while recovering are not  
used; instead, the grid structure is taken directly from the  
checkpoint file.  This works only for checkpoint files that were  
written after these patches have been applied.

The first evolution step after recovering starts, as usual, with a  
regridding procedure, so that it is possible to change the grid  
layout after recovering.

Please give feedback.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>

My email is as private as my paper mail.  I therefore support encrypting
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