SpatialConvolutionMM:forward() passes tests.
adding faster batch-bias kernel
added nOutputPlane == 8  check
tabs -> spaces
typo in benchmark...
adding bias kernel for batchSize == 1
removing invalid comment
proper indent.
added transposed conv (BHWD)
mini batch processing
SpatialConvolutionMM:updateGradInput() tested ok.
SpatialConvolutionMM:accGradParameters().gradWeight passing ok.

(missing gradBias)
adding another small case for benchmark
Merge branch 'spatialconvmm' of github.com:torch/cunn into spatialconvmm
benchmarking accGradParameters()
Merge branch 'spatialconvmm' of github.com:torch/cunn into spatialconvmm
stricter tests on batch size.
gradBias kernel, fails sometimes, still looking into corner cases
fixed gradBias corner case
fixed another bug in gradBiasBatch, now should be bug free