store DofTransformations in Array for BlockNonlinearForm::MultBlocked and ::ComputeGradientBlocked since they need to be reused
store DofTransformations in Array for BlockNonlinearForm::MultBlocked and ::ComputeGradientBlocked since they need to be reused

mfem/mfem,mfem/mfem,mfem/mfem,mfem/mfem,mfem/mfem