add in forward conv gemm call (queues are a bit messed-up for now)
add in forward conv gemm call (queues are a bit messed-up for now)

hughperkins/cuda-on-cl,hughperkins/coriander,hughperkins/cuda-on-cl,hughperkins/coriander,hughperkins/cuda-on-cl,hughperkins/coriander,hughperkins/coriander,hughperkins/cuda-on-cl