DistributionMapping::makeSFC - distribute to user-defined procs

[sayerhs]

Extends the makeSFC method to take an additional argument where the user can override the number of processes a BoxArray is distributed to.

amrex/Src/Base/AMReX_DistributionMapping.H

Lines 235 to 239 in 227bf82

	/**
	* if use_box_vol is true, weight boxes by their volume in Distribute
	* otherwise, all boxes will be treated with equal weight
	*/
	static std::vector<std::vector<int> > makeSFC (const BoxArray& ba, bool use_box_vol=true);