[petsc-dev] Need a new name for DMDAGetOwnershipRanges

[Jed Brown]

Lisandro just pointed out that it does not return a range, which is indeed
confusing.  Two options:

1. Keep the current interface but find a better name.  Low impact on users.

2. Keep the name, and make it return offset arrays of length m+1,n+1,p+1
(the closest analogy to Vec and mat OwnershipRanges).  Higher impact on
users, would require revisiting a decent amount of code in DA, but probably
not in a deep way.

Jed
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