Merge pull request #14 from adampolyak/master

Bindings for SpatialConvolutionLocal
adding defaults for spatialcrossresponsenorm
float precision jacobian that selects a single batch for ccn2
merging changes from upstream
fixing testname
changing test limits for SpatialConvolutionLocal
changing test_jacobian to use ccn2.Jacobian
adding the jacobian tested modules
80-columns
Upstream: Fix CUDA 6.0 performance issues with help from Nvidia's Paulius Micikevicius,
Jerry Chen, and Cliff Woolley.
adding spatialresponsenorm
fix os x build with CUDA 6.0
Merge pull request #15 from szagoruyko/master

fix os x build with CUDA 6.0
clarification
changing default scale
adding cross-map max pooling ffi signatures
added failing SpatialCrossMaxPooling
default dW = kW