GitLab

* small cleanup before starting
Signed-off-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>

* conditional dgrad for Linear
Signed-off-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>

* add tests and small improvements to LNLinear and LNMLP
Signed-off-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>

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Signed-off-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>