do not call in AsymptoticCalculator SetBackgroundAsAlt(true) since it does not applies in case of hypothesis test  (for limits  it is called inside the inverter) add a tolerance for checking qhen qmu is less than zero for numerical errors in computation of qmu
do not call in AsymptoticCalculator SetBackgroundAsAlt(true) since it does not applies in case of hypothesis test 
(for limits  it is called inside the inverter)
add a tolerance for checking qhen qmu is less than zero for numerical errors in computation of qmu


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@44768 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT