Fixed calculation on minimum number of row block entries. Must be at least two -- start and end.
Fixed calculation on minimum number of row block entries. Must be at least two -- start and end.

kknox/clSPARSE,jpola/clSPARSE,ghisvail/clSPARSE,pavanky/clSPARSE,ghisvail/clSPARSE,clMathLibraries/clSPARSE,jpola/clSPARSE,pavanky/clSPARSE,kvaragan/clSPARSE,clMathLibraries/clSPARSE,jlgreathouse/clSPARSE,kvaragan/clSPARSE,jlgreathouse/clSPARSE,kknox/clSPARSE