Created by: mhoemmen
Fix #4392 (closed) by rewriting
Ifpack2::OverlappingRowMatrix::apply to call
Tpetra::CrsMatrix::apply directly for the two CrsMatrix objects in OverlappingRowMatrix, instead of rerolling
CrsMatrix::apply in a slow and sequential way. Fix potential issues with
Tpetra::MultiVector's offset view constructor that came up as a result of this fix. This may also address #4353 (closed).