[ET Trac] [Einstein Toolkit] #2112: move CCTK_MyHost and friends into flesh

[Einstein Toolkit]

#2112: move CCTK_MyHost and friends into flesh
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 Reporter:  rhaas               |       Owner:                     
     Type:  enhancement         |      Status:  new                
 Priority:  minor               |   Milestone:                     
Component:  Cactus              |     Version:  development version
 Keywords:  Carpet PUGH driver  |  
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 Currently Carpet provides functions CCTK_MyHost etc that lets a thorn
 discover which host it is running on and what its "rank" local to the host
 is (ie process N of M processes on a given host).

 It would be good to have this information provided by the flesh similar to
 {{{CCTK_MyRank()}}} which will require a new set of overloadable functions
 (of the same name) for Carpet to hook into.

 Not sure what to do about the currently used aliased function names that
 would then cause a conflict.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/2112>
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