Allow to pass optimization option to nvcc and document this.
Make GpuSoftmax don't crash on GTX285 GPU in somes cases.
pep8
better error msg and comments for gpusoftmax
make GpuSoftmax don't crash when input shape contains 0.
Make GpuSoftmaxWithBias don't crash on GTX285 with some shapes.
fix typo.
Merge pull request #1170 from nouiz/denormal

Denormal