[petsc-dev] Removed functions in MPI 3

[Karl Rupp]

Hi Matt,

>     Since there was a lack of consensus on alternatives, I applied
>     Matt's Right Way here:
>     https://bitbucket.org/petsc/__petsc-dev/commits/__fabf60c7d012db5a109255579665b5__c2
>     <https://bitbucket.org/petsc/petsc-dev/commits/fabf60c7d012db5a109255579665b5c2>
>     https://bitbucket.org/petsc/__buildsystem/commits/__355293e9e4e0588644168f629930b5__66
>     <https://bitbucket.org/petsc/buildsystem/commits/355293e9e4e0588644168f629930b566>
>
>     This is mostly done to ensure that we don't forget about the initial
>     goal of fixing the issue. Cleaner/more unified solutions to the
>     problem are still welcome...
>
>
> This is almost there. I will have BuildSystem write the define directly
> like Barry suggested.

Okay, thanks! Just make sure you set up the macros in the right way 
(Barry accidentally interchanged the old and the new versions in his email).

Best regards,
Karli