BF: set integer type for crossplatform compilation
BF: set integer type for crossplatform compilation

oesteban/dipy,StongeEtienne/dipy,rfdougherty/dipy,mdesco/dipy,villalonreina/dipy,mdesco/dipy,FrancoisRheaultUS/dipy,JohnGriffiths/dipy,sinkpoint/dipy,nilgoyyou/dipy,StongeEtienne/dipy,Messaoud-Boudjada/dipy,FrancoisRheaultUS/dipy,beni55/dipy,samuelstjean/dipy,JohnGriffiths/dipy,oesteban/dipy,demianw/dipy,villalonreina/dipy,jyeatman/dipy,samuelstjean/dipy,Messaoud-Boudjada/dipy,beni55/dipy,nilgoyyou/dipy,rfdougherty/dipy,jyeatman/dipy,sinkpoint/dipy,samuelstjean/dipy,matthieudumont/dipy,matthieudumont/dipy,demianw/dipy