fieldMinMax does not show if max is on patchface

Functionality to add/problem to solve

the fieldMinMax functionObject gives as output:

• min/max
• location
• processor
• cell

If the min/max is on a boundary face instead of in a cell it does not tell you so. Note that the location is (correctly) the face centre but it would be nice if it could tell you e.g. the patch and face index instead of the cell.

Proposal

Maybe print patch/face index instead of cell?