[Developers] Patch: Some additions to ActiveThorns.c

[Tom Goodale]

Ok, please commit all except the CCTK_ThornRequires - the REQUIRES THORNS 
is due to disappear, so this functionshould be unnecessary.

Tom

On Sun, 5 Jun 2005, Erik Schnetter wrote:

> Implement a routine CCTK_ThornRequires that returns the list of thorn
> required by a thorn.  This is analoguous to the existing
> CCTK_ImplementationRequires.
>
> Correct some errors in CCTK_ImplementationRequires and make it more
> robust.
>
> Implement a routine CCTK_ImplementationThornList, which does essentially
> the same as CCTK_ImpThornList, except that it returns a string list
> instead of a pointer to an internal data structure.
>
> Deprecate CCTK_ImpThornList.
>
> Make some pointers const.  Correct some indentation.  Rename a function
> arguments.
>
> -erik
>
>