Fix loading of old SpatialBatchNormalization modules
Fix loading of old SpatialBatchNormalization modules

The old-style running_std is actually the E[1/sqrt(var + eps)]. I forgot
to subtract out the 'eps' when converting to running_var.

PraveerSINGH/nn,jhjin/nn,kmul00/nn,elbamos/nn,caldweln/nn,diz-vara/nn,xianjiec/nn,joeyhng/nn,andreaskoepf/nn,sagarwaghmare69/nn,jonathantompson/nn,apaszke/nn,eriche2016/nn,colesbury/nn,nicholas-leonard/nn